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Finding the Fourth Proportional to 410,555.20, 615,832.80 and 242,593.60

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Solution

The fourth proportional to 410,555.20, 615,832.80 and 242,593.60 is: 363,890.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,555.20 : 615,832.80 = 242,593.60 : x
  2. Step 2: Convert to fraction form
    410,555.20/615,832.80 = 242,593.60/x
  3. Step 3: Cross multiply
    410,555.20x = 615,832.80 × 242,593.60
  4. Step 4: Simplify right side
    410,555.20x = 149,397,095,950.08
  5. Step 5: Solve for x
    x = 149,397,095,950.08/410,555.20
  6. Step 6: Final answer
    x = 363,890.40

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Similar ratio
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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.