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Finding the Fourth Proportional to 410,014.32, 615,019.56 and 129,531.12

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Solution

The fourth proportional to 410,014.32, 615,019.56 and 129,531.12 is: 194,296.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,014.32 : 615,019.56 = 129,531.12 : x
  2. Step 2: Convert to fraction form
    410,014.32/615,019.56 = 129,531.12/x
  3. Step 3: Cross multiply
    410,014.32x = 615,019.56 × 129,531.12
  4. Step 4: Simplify right side
    410,014.32x = 79,664,172,428.71
  5. Step 5: Solve for x
    x = 79,664,172,428.71/410,014.32
  6. Step 6: Final answer
    x = 194,296.07

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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.