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Finding the Fourth Proportional to 475,976.20, 656,841.54 and 261,117.88

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Solution

The fourth proportional to 475,976.20, 656,841.54 and 261,117.88 is: 360,339.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,976.20 : 656,841.54 = 261,117.88 : x
  2. Step 2: Convert to fraction form
    475,976.20/656,841.54 = 261,117.88/x
  3. Step 3: Cross multiply
    475,976.20x = 656,841.54 × 261,117.88
  4. Step 4: Simplify right side
    475,976.20x = 171,513,070,420.74
  5. Step 5: Solve for x
    x = 171,513,070,420.74/475,976.20
  6. Step 6: Final answer
    x = 360,339.59

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1.5x scale

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.