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Finding the Fourth Proportional to 476,885.49, 715,439.02 and 139,912.53

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Solution

The fourth proportional to 476,885.49, 715,439.02 and 139,912.53 is: 209,901.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,885.49 : 715,439.02 = 139,912.53 : x
  2. Step 2: Convert to fraction form
    476,885.49/715,439.02 = 139,912.53/x
  3. Step 3: Cross multiply
    476,885.49x = 715,439.02 × 139,912.53
  4. Step 4: Simplify right side
    476,885.49x = 100,098,883,348.92
  5. Step 5: Solve for x
    x = 100,098,883,348.92/476,885.49
  6. Step 6: Final answer
    x = 209,901.30

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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.