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Finding the Fourth Proportional to 415,335.60, 573,139.80 and 245,624.40

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Solution

The fourth proportional to 415,335.60, 573,139.80 and 245,624.40 is: 338,947.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,335.60 : 573,139.80 = 245,624.40 : x
  2. Step 2: Convert to fraction form
    415,335.60/573,139.80 = 245,624.40/x
  3. Step 3: Cross multiply
    415,335.60x = 573,139.80 × 245,624.40
  4. Step 4: Simplify right side
    415,335.60x = 140,777,119,491.12
  5. Step 5: Solve for x
    x = 140,777,119,491.12/415,335.60
  6. Step 6: Final answer
    x = 338,947.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.