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Finding the Fourth Proportional to 543,695.95, 815,691.55 and 164,629.40

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Solution

The fourth proportional to 543,695.95, 815,691.55 and 164,629.40 is: 246,988.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,695.95 : 815,691.55 = 164,629.40 : x
  2. Step 2: Convert to fraction form
    543,695.95/815,691.55 = 164,629.40/x
  3. Step 3: Cross multiply
    543,695.95x = 815,691.55 × 164,629.40
  4. Step 4: Simplify right side
    543,695.95x = 134,286,806,280.22
  5. Step 5: Solve for x
    x = 134,286,806,280.22/543,695.95
  6. Step 6: Final answer
    x = 246,988.79

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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.