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Finding the Fourth Proportional to 218,716, 328,074.21 and 60,948.66

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Solution

The fourth proportional to 218,716, 328,074.21 and 60,948.66 is: 91,423.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,716 : 328,074.21 = 60,948.66 : x
  2. Step 2: Convert to fraction form
    218,716/328,074.21 = 60,948.66/x
  3. Step 3: Cross multiply
    218,716x = 328,074.21 × 60,948.66
  4. Step 4: Simplify right side
    218,716x = 19,995,681,534.94
  5. Step 5: Solve for x
    x = 19,995,681,534.94/218,716
  6. Step 6: Final answer
    x = 91,423.04

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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.