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Finding the Fourth Proportional to 424,613.12, 636,903.27 and 158,373.21

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Solution

The fourth proportional to 424,613.12, 636,903.27 and 158,373.21 is: 237,553.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,613.12 : 636,903.27 = 158,373.21 : x
  2. Step 2: Convert to fraction form
    424,613.12/636,903.27 = 158,373.21/x
  3. Step 3: Cross multiply
    424,613.12x = 636,903.27 × 158,373.21
  4. Step 4: Simplify right side
    424,613.12x = 100,868,415,329.40
  5. Step 5: Solve for x
    x = 100,868,415,329.40/424,613.12
  6. Step 6: Final answer
    x = 237,553.69

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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.