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Finding the Fourth Proportional to 400,402.49, 552,500.78 and 239,223.29

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Solution

The fourth proportional to 400,402.49, 552,500.78 and 239,223.29 is: 330,095.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,402.49 : 552,500.78 = 239,223.29 : x
  2. Step 2: Convert to fraction form
    400,402.49/552,500.78 = 239,223.29/x
  3. Step 3: Cross multiply
    400,402.49x = 552,500.78 × 239,223.29
  4. Step 4: Simplify right side
    400,402.49x = 132,171,050,360.55
  5. Step 5: Solve for x
    x = 132,171,050,360.55/400,402.49
  6. Step 6: Final answer
    x = 330,095.48

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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.