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Finding the Fourth Proportional to 443,484.60, 665,226.90 and 127,951.80

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Solution

The fourth proportional to 443,484.60, 665,226.90 and 127,951.80 is: 191,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,484.60 : 665,226.90 = 127,951.80 : x
  2. Step 2: Convert to fraction form
    443,484.60/665,226.90 = 127,951.80/x
  3. Step 3: Cross multiply
    443,484.60x = 665,226.90 × 127,951.80
  4. Step 4: Simplify right side
    443,484.60x = 85,116,979,263.42
  5. Step 5: Solve for x
    x = 85,116,979,263.42/443,484.60
  6. Step 6: Final answer
    x = 191,927.70

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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.