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Finding the Fourth Proportional to 442,861.20, 664,291.80 and 265,568.40

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Solution

The fourth proportional to 442,861.20, 664,291.80 and 265,568.40 is: 398,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,861.20 : 664,291.80 = 265,568.40 : x
  2. Step 2: Convert to fraction form
    442,861.20/664,291.80 = 265,568.40/x
  3. Step 3: Cross multiply
    442,861.20x = 664,291.80 × 265,568.40
  4. Step 4: Simplify right side
    442,861.20x = 176,414,910,459.12
  5. Step 5: Solve for x
    x = 176,414,910,459.12/442,861.20
  6. Step 6: Final answer
    x = 398,352.60

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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.