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Finding the Fourth Proportional to 424,279.62, 636,283.38 and 139,906.26

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Solution

The fourth proportional to 424,279.62, 636,283.38 and 139,906.26 is: 209,814.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,279.62 : 636,283.38 = 139,906.26 : x
  2. Step 2: Convert to fraction form
    424,279.62/636,283.38 = 139,906.26/x
  3. Step 3: Cross multiply
    424,279.62x = 636,283.38 × 139,906.26
  4. Step 4: Simplify right side
    424,279.62x = 89,020,027,995.96
  5. Step 5: Solve for x
    x = 89,020,027,995.96/424,279.62
  6. Step 6: Final answer
    x = 209,814.53

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1.5x scale

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.