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Finding the Fourth Proportional to 218,812.92, 328,219.50 and 69,064.92

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Solution

The fourth proportional to 218,812.92, 328,219.50 and 69,064.92 is: 103,597.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,812.92 : 328,219.50 = 69,064.92 : x
  2. Step 2: Convert to fraction form
    218,812.92/328,219.50 = 69,064.92/x
  3. Step 3: Cross multiply
    218,812.92x = 328,219.50 × 69,064.92
  4. Step 4: Simplify right side
    218,812.92x = 22,668,453,509.94
  5. Step 5: Solve for x
    x = 22,668,453,509.94/218,812.92
  6. Step 6: Final answer
    x = 103,597.42

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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.