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Finding the Fourth Proportional to 410,068.40, 615,102.60 and 343,713.20

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Solution

The fourth proportional to 410,068.40, 615,102.60 and 343,713.20 is: 515,569.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,068.40 : 615,102.60 = 343,713.20 : x
  2. Step 2: Convert to fraction form
    410,068.40/615,102.60 = 343,713.20/x
  3. Step 3: Cross multiply
    410,068.40x = 615,102.60 × 343,713.20
  4. Step 4: Simplify right side
    410,068.40x = 211,418,882,974.32
  5. Step 5: Solve for x
    x = 211,418,882,974.32/410,068.40
  6. Step 6: Final answer
    x = 515,569.80

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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.