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Finding the Fourth Proportional to 469,269.53, 648,126.56 and 318,104.09

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Solution

The fourth proportional to 469,269.53, 648,126.56 and 318,104.09 is: 439,346.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,269.53 : 648,126.56 = 318,104.09 : x
  2. Step 2: Convert to fraction form
    469,269.53/648,126.56 = 318,104.09/x
  3. Step 3: Cross multiply
    469,269.53x = 648,126.56 × 318,104.09
  4. Step 4: Simplify right side
    469,269.53x = 206,171,707,983.11
  5. Step 5: Solve for x
    x = 206,171,707,983.11/469,269.53
  6. Step 6: Final answer
    x = 439,346.04

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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.