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Finding the Fourth Proportional to 480,751.20, 721,244.88 and 165,212.64

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Solution

The fourth proportional to 480,751.20, 721,244.88 and 165,212.64 is: 247,859.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,751.20 : 721,244.88 = 165,212.64 : x
  2. Step 2: Convert to fraction form
    480,751.20/721,244.88 = 165,212.64/x
  3. Step 3: Cross multiply
    480,751.20x = 721,244.88 × 165,212.64
  4. Step 4: Simplify right side
    480,751.20x = 119,158,770,711.28
  5. Step 5: Solve for x
    x = 119,158,770,711.28/480,751.20
  6. Step 6: Final answer
    x = 247,859.54

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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.