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Finding the Fourth Proportional to 440,944, 661,416 and 108,520

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Solution

The fourth proportional to 440,944, 661,416 and 108,520 is: 162,780

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,944 : 661,416 = 108,520 : x
  2. Step 2: Convert to fraction form
    440,944/661,416 = 108,520/x
  3. Step 3: Cross multiply
    440,944x = 661,416 × 108,520
  4. Step 4: Simplify right side
    440,944x = 71,776,864,320
  5. Step 5: Solve for x
    x = 71,776,864,320/440,944
  6. Step 6: Final answer
    x = 162,780

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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.