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Finding the Fourth Proportional to 374,691.57, 517,079.83 and 211,355.88

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Solution

The fourth proportional to 374,691.57, 517,079.83 and 211,355.88 is: 291,674.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,691.57 : 517,079.83 = 211,355.88 : x
  2. Step 2: Convert to fraction form
    374,691.57/517,079.83 = 211,355.88/x
  3. Step 3: Cross multiply
    374,691.57x = 517,079.83 × 211,355.88
  4. Step 4: Simplify right side
    374,691.57x = 109,287,862,742.89
  5. Step 5: Solve for x
    x = 109,287,862,742.89/374,691.57
  6. Step 6: Final answer
    x = 291,674.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.