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Finding the Fourth Proportional to 663,307.29, 994,251.47 and 343,136.88

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Solution

The fourth proportional to 663,307.29, 994,251.47 and 343,136.88 is: 514,338.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,307.29 : 994,251.47 = 343,136.88 : x
  2. Step 2: Convert to fraction form
    663,307.29/994,251.47 = 343,136.88/x
  3. Step 3: Cross multiply
    663,307.29x = 994,251.47 × 343,136.88
  4. Step 4: Simplify right side
    663,307.29x = 341,164,345,635.53
  5. Step 5: Solve for x
    x = 341,164,345,635.53/663,307.29
  6. Step 6: Final answer
    x = 514,338.30

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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.