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Finding the Fourth Proportional to 443,207.60, 664,422.60 and 265,785.20

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Solution

The fourth proportional to 443,207.60, 664,422.60 and 265,785.20 is: 398,444.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,207.60 : 664,422.60 = 265,785.20 : x
  2. Step 2: Convert to fraction form
    443,207.60/664,422.60 = 265,785.20/x
  3. Step 3: Cross multiply
    443,207.60x = 664,422.60 × 265,785.20
  4. Step 4: Simplify right side
    443,207.60x = 176,593,693,625.52
  5. Step 5: Solve for x
    x = 176,593,693,625.52/443,207.60
  6. Step 6: Final answer
    x = 398,444.64

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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.