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Finding the Fourth Proportional to 443,956.20, 665,999.10 and 144,385.80

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Solution

The fourth proportional to 443,956.20, 665,999.10 and 144,385.80 is: 216,599.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,956.20 : 665,999.10 = 144,385.80 : x
  2. Step 2: Convert to fraction form
    443,956.20/665,999.10 = 144,385.80/x
  3. Step 3: Cross multiply
    443,956.20x = 665,999.10 × 144,385.80
  4. Step 4: Simplify right side
    443,956.20x = 96,160,812,852.78
  5. Step 5: Solve for x
    x = 96,160,812,852.78/443,956.20
  6. Step 6: Final answer
    x = 216,599.77

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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.