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Finding the Fourth Proportional to 218,799.32, 328,254.39 and 61,027.74

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Solution

The fourth proportional to 218,799.32, 328,254.39 and 61,027.74 is: 91,557.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,799.32 : 328,254.39 = 61,027.74 : x
  2. Step 2: Convert to fraction form
    218,799.32/328,254.39 = 61,027.74/x
  3. Step 3: Cross multiply
    218,799.32x = 328,254.39 × 61,027.74
  4. Step 4: Simplify right side
    218,799.32x = 20,032,623,566.78
  5. Step 5: Solve for x
    x = 20,032,623,566.78/218,799.32
  6. Step 6: Final answer
    x = 91,557.07

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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.