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Finding the Fourth Proportional to 424,400.13, 636,600.33 and 108,857.03

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Solution

The fourth proportional to 424,400.13, 636,600.33 and 108,857.03 is: 163,285.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,400.13 : 636,600.33 = 108,857.03 : x
  2. Step 2: Convert to fraction form
    424,400.13/636,600.33 = 108,857.03/x
  3. Step 3: Cross multiply
    424,400.13x = 636,600.33 × 108,857.03
  4. Step 4: Simplify right side
    424,400.13x = 69,298,418,037.82
  5. Step 5: Solve for x
    x = 69,298,418,037.82/424,400.13
  6. Step 6: Final answer
    x = 163,285.57

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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.