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Finding the Fourth Proportional to 217,737.15, 300,469.55 and 122,247.87

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Solution

The fourth proportional to 217,737.15, 300,469.55 and 122,247.87 is: 168,697.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,737.15 : 300,469.55 = 122,247.87 : x
  2. Step 2: Convert to fraction form
    217,737.15/300,469.55 = 122,247.87/x
  3. Step 3: Cross multiply
    217,737.15x = 300,469.55 × 122,247.87
  4. Step 4: Simplify right side
    217,737.15x = 36,731,761,437.00
  5. Step 5: Solve for x
    x = 36,731,761,437.00/217,737.15
  6. Step 6: Final answer
    x = 168,697.73

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1.5x scale

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.