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Finding the Fourth Proportional to 318,156.48, 477,160.92 and 140,566.68

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Solution

The fourth proportional to 318,156.48, 477,160.92 and 140,566.68 is: 210,817.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,156.48 : 477,160.92 = 140,566.68 : x
  2. Step 2: Convert to fraction form
    318,156.48/477,160.92 = 140,566.68/x
  3. Step 3: Cross multiply
    318,156.48x = 477,160.92 × 140,566.68
  4. Step 4: Simplify right side
    318,156.48x = 67,072,926,350.15
  5. Step 5: Solve for x
    x = 67,072,926,350.15/318,156.48
  6. Step 6: Final answer
    x = 210,817.41

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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.