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Finding the Fourth Proportional to 443,312.26, 665,296.54 and 329,719.48

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Solution

The fourth proportional to 443,312.26, 665,296.54 and 329,719.48 is: 494,823.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,312.26 : 665,296.54 = 329,719.48 : x
  2. Step 2: Convert to fraction form
    443,312.26/665,296.54 = 329,719.48/x
  3. Step 3: Cross multiply
    443,312.26x = 665,296.54 × 329,719.48
  4. Step 4: Simplify right side
    443,312.26x = 219,361,226,727.06
  5. Step 5: Solve for x
    x = 219,361,226,727.06/443,312.26
  6. Step 6: Final answer
    x = 494,823.28

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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.