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Finding the Fourth Proportional to 424,179.72, 636,249.42 and 124,648.20

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Solution

The fourth proportional to 424,179.72, 636,249.42 and 124,648.20 is: 186,966.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,179.72 : 636,249.42 = 124,648.20 : x
  2. Step 2: Convert to fraction form
    424,179.72/636,249.42 = 124,648.20/x
  3. Step 3: Cross multiply
    424,179.72x = 636,249.42 × 124,648.20
  4. Step 4: Simplify right side
    424,179.72x = 79,307,344,954.04
  5. Step 5: Solve for x
    x = 79,307,344,954.04/424,179.72
  6. Step 6: Final answer
    x = 186,966.38

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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.