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Finding the Fourth Proportional to 424,287.91, 636,708.75 and 158,261.23

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Solution

The fourth proportional to 424,287.91, 636,708.75 and 158,261.23 is: 237,495.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,287.91 : 636,708.75 = 158,261.23 : x
  2. Step 2: Convert to fraction form
    424,287.91/636,708.75 = 158,261.23/x
  3. Step 3: Cross multiply
    424,287.91x = 636,708.75 × 158,261.23
  4. Step 4: Simplify right side
    424,287.91x = 100,766,309,926.76
  5. Step 5: Solve for x
    x = 100,766,309,926.76/424,287.91
  6. Step 6: Final answer
    x = 237,495.12

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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.