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Finding the Fourth Proportional to 543,148.62, 749,635.20 and 316,794.12

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Solution

The fourth proportional to 543,148.62, 749,635.20 and 316,794.12 is: 437,228.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,148.62 : 749,635.20 = 316,794.12 : x
  2. Step 2: Convert to fraction form
    543,148.62/749,635.20 = 316,794.12/x
  3. Step 3: Cross multiply
    543,148.62x = 749,635.20 × 316,794.12
  4. Step 4: Simplify right side
    543,148.62x = 237,480,023,505.02
  5. Step 5: Solve for x
    x = 237,480,023,505.02/543,148.62
  6. Step 6: Final answer
    x = 437,228.44

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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.