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Finding the Fourth Proportional to 218,728.70, 328,093.05 and 52,516.70

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Solution

The fourth proportional to 218,728.70, 328,093.05 and 52,516.70 is: 78,775.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,728.70 : 328,093.05 = 52,516.70 : x
  2. Step 2: Convert to fraction form
    218,728.70/328,093.05 = 52,516.70/x
  3. Step 3: Cross multiply
    218,728.70x = 328,093.05 × 52,516.70
  4. Step 4: Simplify right side
    218,728.70x = 17,230,364,278.94
  5. Step 5: Solve for x
    x = 17,230,364,278.94/218,728.70
  6. Step 6: Final answer
    x = 78,775.05

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1.5x scale

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.