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Finding the Fourth Proportional to 443,468.52, 665,129.88 and 127,840.68

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Solution

The fourth proportional to 443,468.52, 665,129.88 and 127,840.68 is: 191,740.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,468.52 : 665,129.88 = 127,840.68 : x
  2. Step 2: Convert to fraction form
    443,468.52/665,129.88 = 127,840.68/x
  3. Step 3: Cross multiply
    443,468.52x = 665,129.88 × 127,840.68
  4. Step 4: Simplify right side
    443,468.52x = 85,030,656,147.52
  5. Step 5: Solve for x
    x = 85,030,656,147.52/443,468.52
  6. Step 6: Final answer
    x = 191,740.00

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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.