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Finding the Fourth Proportional to 218,930.01, 328,439.33 and 92,570.05

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Solution

The fourth proportional to 218,930.01, 328,439.33 and 92,570.05 is: 138,873.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,930.01 : 328,439.33 = 92,570.05 : x
  2. Step 2: Convert to fraction form
    218,930.01/328,439.33 = 92,570.05/x
  3. Step 3: Cross multiply
    218,930.01x = 328,439.33 × 92,570.05
  4. Step 4: Simplify right side
    218,930.01x = 30,403,643,916.12
  5. Step 5: Solve for x
    x = 30,403,643,916.12/218,930.01
  6. Step 6: Final answer
    x = 138,873.81

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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.