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Finding the Fourth Proportional to 443,410.60, 665,214.18 and 127,842.88

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Solution

The fourth proportional to 443,410.60, 665,214.18 and 127,842.88 is: 191,792.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,410.60 : 665,214.18 = 127,842.88 : x
  2. Step 2: Convert to fraction form
    443,410.60/665,214.18 = 127,842.88/x
  3. Step 3: Cross multiply
    443,410.60x = 665,214.18 × 127,842.88
  4. Step 4: Simplify right side
    443,410.60x = 85,042,896,588.04
  5. Step 5: Solve for x
    x = 85,042,896,588.04/443,410.60
  6. Step 6: Final answer
    x = 191,792.66

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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.