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Finding the Fourth Proportional to 480,969.32, 721,446.64 and 165,428.96

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Solution

The fourth proportional to 480,969.32, 721,446.64 and 165,428.96 is: 248,140.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,969.32 : 721,446.64 = 165,428.96 : x
  2. Step 2: Convert to fraction form
    480,969.32/721,446.64 = 165,428.96/x
  3. Step 3: Cross multiply
    480,969.32x = 721,446.64 × 165,428.96
  4. Step 4: Simplify right side
    480,969.32x = 119,348,167,350.69
  5. Step 5: Solve for x
    x = 119,348,167,350.69/480,969.32
  6. Step 6: Final answer
    x = 248,140.92

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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.