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Finding the Fourth Proportional to 417,979.80, 626,540.76 and 165,157.92

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Solution

The fourth proportional to 417,979.80, 626,540.76 and 165,157.92 is: 247,567.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,979.80 : 626,540.76 = 165,157.92 : x
  2. Step 2: Convert to fraction form
    417,979.80/626,540.76 = 165,157.92/x
  3. Step 3: Cross multiply
    417,979.80x = 626,540.76 × 165,157.92
  4. Step 4: Simplify right side
    417,979.80x = 103,478,168,716.82
  5. Step 5: Solve for x
    x = 103,478,168,716.82/417,979.80
  6. Step 6: Final answer
    x = 247,567.39

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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.