Home / 287,021,658,770.76-396,090,048,021.54-155,034,007,619.88

Finding the Fourth Proportional to 287,021,658,770.76, 396,090,048,021.54 and 155,034,007,619.88

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Solution

The fourth proportional to 287,021,658,770.76, 396,090,048,021.54 and 155,034,007,619.88 is: 213,947,016,354.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,021,658,770.76 : 396,090,048,021.54 = 155,034,007,619.88 : x
  2. Step 2: Convert to fraction form
    287,021,658,770.76/396,090,048,021.54 = 155,034,007,619.88/x
  3. Step 3: Cross multiply
    287,021,658,770.76x = 396,090,048,021.54 × 155,034,007,619.88
  4. Step 4: Simplify right side
    287,021,658,770.76x = 61,407,427,523,130,066,731,008
  5. Step 5: Solve for x
    x = 61,407,427,523,130,066,731,008/287,021,658,770.76
  6. Step 6: Final answer
    x = 213,947,016,354.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.