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Finding the Fourth Proportional to 331,722.40, 498,812.40 and 277,655.20

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Solution

The fourth proportional to 331,722.40, 498,812.40 and 277,655.20 is: 417,511.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,722.40 : 498,812.40 = 277,655.20 : x
  2. Step 2: Convert to fraction form
    331,722.40/498,812.40 = 277,655.20/x
  3. Step 3: Cross multiply
    331,722.40x = 498,812.40 × 277,655.20
  4. Step 4: Simplify right side
    331,722.40x = 138,497,856,684.48
  5. Step 5: Solve for x
    x = 138,497,856,684.48/331,722.40
  6. Step 6: Final answer
    x = 417,511.32

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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.