Home / 218,816.50-328,224.84-69,071.92

Finding the Fourth Proportional to 218,816.50, 328,224.84 and 69,071.92

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Solution

The fourth proportional to 218,816.50, 328,224.84 and 69,071.92 is: 103,607.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,816.50 : 328,224.84 = 69,071.92 : x
  2. Step 2: Convert to fraction form
    218,816.50/328,224.84 = 69,071.92/x
  3. Step 3: Cross multiply
    218,816.50x = 328,224.84 × 69,071.92
  4. Step 4: Simplify right side
    218,816.50x = 22,671,119,890.49
  5. Step 5: Solve for x
    x = 22,671,119,890.49/218,816.50
  6. Step 6: Final answer
    x = 103,607.91

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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.