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Finding the Fourth Proportional to 400,407.86, 552,508.20 and 239,228.66

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Solution

The fourth proportional to 400,407.86, 552,508.20 and 239,228.66 is: 330,102.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,407.86 : 552,508.20 = 239,228.66 : x
  2. Step 2: Convert to fraction form
    400,407.86/552,508.20 = 239,228.66/x
  3. Step 3: Cross multiply
    400,407.86x = 552,508.20 × 239,228.66
  4. Step 4: Simplify right side
    400,407.86x = 132,175,796,325.01
  5. Step 5: Solve for x
    x = 132,175,796,325.01/400,407.86
  6. Step 6: Final answer
    x = 330,102.90

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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.