Home / 287,021,658,762.50-396,090,048,010.12-155,034,007,611.59

Finding the Fourth Proportional to 287,021,658,762.50, 396,090,048,010.12 and 155,034,007,611.59

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Solution

The fourth proportional to 287,021,658,762.50, 396,090,048,010.12 and 155,034,007,611.59 is: 213,947,016,343.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,021,658,762.50 : 396,090,048,010.12 = 155,034,007,611.59 : x
  2. Step 2: Convert to fraction form
    287,021,658,762.50/396,090,048,010.12 = 155,034,007,611.59/x
  3. Step 3: Cross multiply
    287,021,658,762.50x = 396,090,048,010.12 × 155,034,007,611.59
  4. Step 4: Simplify right side
    287,021,658,762.50x = 61,407,427,518,075,989,131,264
  5. Step 5: Solve for x
    x = 61,407,427,518,075,989,131,264/287,021,658,762.50
  6. Step 6: Final answer
    x = 213,947,016,343.07

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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.