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Finding the Fourth Proportional to 424,082.70, 636,124.05 and 187,886.70

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Solution

The fourth proportional to 424,082.70, 636,124.05 and 187,886.70 is: 281,830.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,082.70 : 636,124.05 = 187,886.70 : x
  2. Step 2: Convert to fraction form
    424,082.70/636,124.05 = 187,886.70/x
  3. Step 3: Cross multiply
    424,082.70x = 636,124.05 × 187,886.70
  4. Step 4: Simplify right side
    424,082.70x = 119,519,248,545.14
  5. Step 5: Solve for x
    x = 119,519,248,545.14/424,082.70
  6. Step 6: Final answer
    x = 281,830.05

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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.