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Finding the Fourth Proportional to 219,155.92, 328,771.50 and 69,393.76

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Solution

The fourth proportional to 219,155.92, 328,771.50 and 69,393.76 is: 104,102.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,155.92 : 328,771.50 = 69,393.76 : x
  2. Step 2: Convert to fraction form
    219,155.92/328,771.50 = 69,393.76/x
  3. Step 3: Cross multiply
    219,155.92x = 328,771.50 × 69,393.76
  4. Step 4: Simplify right side
    219,155.92x = 22,814,690,565.84
  5. Step 5: Solve for x
    x = 22,814,690,565.84/219,155.92
  6. Step 6: Final answer
    x = 104,102.55

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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.