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Finding the Fourth Proportional to 443,256.60, 664,496.10 and 265,834.20

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Solution

The fourth proportional to 443,256.60, 664,496.10 and 265,834.20 is: 398,518.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,256.60 : 664,496.10 = 265,834.20 : x
  2. Step 2: Convert to fraction form
    443,256.60/664,496.10 = 265,834.20/x
  3. Step 3: Cross multiply
    443,256.60x = 664,496.10 × 265,834.20
  4. Step 4: Simplify right side
    443,256.60x = 176,645,789,146.62
  5. Step 5: Solve for x
    x = 176,645,789,146.62/443,256.60
  6. Step 6: Final answer
    x = 398,518.13

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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.