Home / 287,614.68-431,420.13-87,934.29

Finding the Fourth Proportional to 287,614.68, 431,420.13 and 87,934.29

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Solution

The fourth proportional to 287,614.68, 431,420.13 and 87,934.29 is: 131,900.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,614.68 : 431,420.13 = 87,934.29 : x
  2. Step 2: Convert to fraction form
    287,614.68/431,420.13 = 87,934.29/x
  3. Step 3: Cross multiply
    287,614.68x = 431,420.13 × 87,934.29
  4. Step 4: Simplify right side
    287,614.68x = 37,936,622,823.26
  5. Step 5: Solve for x
    x = 37,936,622,823.26/287,614.68
  6. Step 6: Final answer
    x = 131,900.86

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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.