Home / 287,115.10-430,763.16-135,306.04

Finding the Fourth Proportional to 287,115.10, 430,763.16 and 135,306.04

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Solution

The fourth proportional to 287,115.10, 430,763.16 and 135,306.04 is: 203,001.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,115.10 : 430,763.16 = 135,306.04 : x
  2. Step 2: Convert to fraction form
    287,115.10/430,763.16 = 135,306.04/x
  3. Step 3: Cross multiply
    287,115.10x = 430,763.16 × 135,306.04
  4. Step 4: Simplify right side
    287,115.10x = 58,284,857,357.49
  5. Step 5: Solve for x
    x = 58,284,857,357.49/287,115.10
  6. Step 6: Final answer
    x = 203,001.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.