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Finding the Fourth Proportional to 481,430.70, 721,951.65 and 165,725.10

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Solution

The fourth proportional to 481,430.70, 721,951.65 and 165,725.10 is: 248,520.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,430.70 : 721,951.65 = 165,725.10 : x
  2. Step 2: Convert to fraction form
    481,430.70/721,951.65 = 165,725.10/x
  3. Step 3: Cross multiply
    481,430.70x = 721,951.65 × 165,725.10
  4. Step 4: Simplify right side
    481,430.70x = 119,645,509,391.42
  5. Step 5: Solve for x
    x = 119,645,509,391.42/481,430.70
  6. Step 6: Final answer
    x = 248,520.73

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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.