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Finding the Fourth Proportional to 215,737.20, 323,564.04 and 65,941.20

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Solution

The fourth proportional to 215,737.20, 323,564.04 and 65,941.20 is: 98,899.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,737.20 : 323,564.04 = 65,941.20 : x
  2. Step 2: Convert to fraction form
    215,737.20/323,564.04 = 65,941.20/x
  3. Step 3: Cross multiply
    215,737.20x = 323,564.04 × 65,941.20
  4. Step 4: Simplify right side
    215,737.20x = 21,336,201,074.45
  5. Step 5: Solve for x
    x = 21,336,201,074.45/215,737.20
  6. Step 6: Final answer
    x = 98,899.04

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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.