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Finding the Fourth Proportional to 218,937.98, 328,529.96 and 119,105.15

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Solution

The fourth proportional to 218,937.98, 328,529.96 and 119,105.15 is: 178,724.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,937.98 : 328,529.96 = 119,105.15 : x
  2. Step 2: Convert to fraction form
    218,937.98/328,529.96 = 119,105.15/x
  3. Step 3: Cross multiply
    218,937.98x = 328,529.96 × 119,105.15
  4. Step 4: Simplify right side
    218,937.98x = 39,129,607,927.12
  5. Step 5: Solve for x
    x = 39,129,607,927.12/218,937.98
  6. Step 6: Final answer
    x = 178,724.63

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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.