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Finding the Fourth Proportional to 286,368.75, 395,189.01 and 159,045.39

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Solution

The fourth proportional to 286,368.75, 395,189.01 and 159,045.39 is: 219,482.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,368.75 : 395,189.01 = 159,045.39 : x
  2. Step 2: Convert to fraction form
    286,368.75/395,189.01 = 159,045.39/x
  3. Step 3: Cross multiply
    286,368.75x = 395,189.01 × 159,045.39
  4. Step 4: Simplify right side
    286,368.75x = 62,852,990,219.16
  5. Step 5: Solve for x
    x = 62,852,990,219.16/286,368.75
  6. Step 6: Final answer
    x = 219,482.71

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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.