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Finding the Fourth Proportional to 318,641.33, 439,737.57 and 175,414.70

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Solution

The fourth proportional to 318,641.33, 439,737.57 and 175,414.70 is: 242,079.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,641.33 : 439,737.57 = 175,414.70 : x
  2. Step 2: Convert to fraction form
    318,641.33/439,737.57 = 175,414.70/x
  3. Step 3: Cross multiply
    318,641.33x = 439,737.57 × 175,414.70
  4. Step 4: Simplify right side
    318,641.33x = 77,136,431,721.59
  5. Step 5: Solve for x
    x = 77,136,431,721.59/318,641.33
  6. Step 6: Final answer
    x = 242,079.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.