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Finding the Fourth Proportional to 515,601.60, 773,439.24 and 215,780.28

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Solution

The fourth proportional to 515,601.60, 773,439.24 and 215,780.28 is: 323,685.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,601.60 : 773,439.24 = 215,780.28 : x
  2. Step 2: Convert to fraction form
    515,601.60/773,439.24 = 215,780.28/x
  3. Step 3: Cross multiply
    515,601.60x = 773,439.24 × 215,780.28
  4. Step 4: Simplify right side
    515,601.60x = 166,892,935,770.19
  5. Step 5: Solve for x
    x = 166,892,935,770.19/515,601.60
  6. Step 6: Final answer
    x = 323,685.84

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1.5x scale

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.