Home / 287,923.80-431,691.30-153,010.20

Finding the Fourth Proportional to 287,923.80, 431,691.30 and 153,010.20

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Solution

The fourth proportional to 287,923.80, 431,691.30 and 153,010.20 is: 229,411.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,923.80 : 431,691.30 = 153,010.20 : x
  2. Step 2: Convert to fraction form
    287,923.80/431,691.30 = 153,010.20/x
  3. Step 3: Cross multiply
    287,923.80x = 431,691.30 × 153,010.20
  4. Step 4: Simplify right side
    287,923.80x = 66,053,172,151.26
  5. Step 5: Solve for x
    x = 66,053,172,151.26/287,923.80
  6. Step 6: Final answer
    x = 229,411.99

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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.