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Finding the Fourth Proportional to 424,045.50, 636,166.50 and 139,725.87

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Solution

The fourth proportional to 424,045.50, 636,166.50 and 139,725.87 is: 209,621.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,045.50 : 636,166.50 = 139,725.87 : x
  2. Step 2: Convert to fraction form
    424,045.50/636,166.50 = 139,725.87/x
  3. Step 3: Cross multiply
    424,045.50x = 636,166.50 × 139,725.87
  4. Step 4: Simplify right side
    424,045.50x = 88,888,917,677.36
  5. Step 5: Solve for x
    x = 88,888,917,677.36/424,045.50
  6. Step 6: Final answer
    x = 209,621.18

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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.