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Finding the Fourth Proportional to 410,055.20, 615,082.80 and 251,770.40

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Solution

The fourth proportional to 410,055.20, 615,082.80 and 251,770.40 is: 377,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,055.20 : 615,082.80 = 251,770.40 : x
  2. Step 2: Convert to fraction form
    410,055.20/615,082.80 = 251,770.40/x
  3. Step 3: Cross multiply
    410,055.20x = 615,082.80 × 251,770.40
  4. Step 4: Simplify right side
    410,055.20x = 154,859,642,589.12
  5. Step 5: Solve for x
    x = 154,859,642,589.12/410,055.20
  6. Step 6: Final answer
    x = 377,655.60

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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.