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Finding the Fourth Proportional to 215,650.40, 323,432.40 and 103,330.40

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Solution

The fourth proportional to 215,650.40, 323,432.40 and 103,330.40 is: 154,974.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,650.40 : 323,432.40 = 103,330.40 : x
  2. Step 2: Convert to fraction form
    215,650.40/323,432.40 = 103,330.40/x
  3. Step 3: Cross multiply
    215,650.40x = 323,432.40 × 103,330.40
  4. Step 4: Simplify right side
    215,650.40x = 33,420,399,264.96
  5. Step 5: Solve for x
    x = 33,420,399,264.96/215,650.40
  6. Step 6: Final answer
    x = 154,974.90

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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.