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Finding the Fourth Proportional to 225,878.98, 338,617.45 and 85,736.02

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Solution

The fourth proportional to 225,878.98, 338,617.45 and 85,736.02 is: 128,527.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,878.98 : 338,617.45 = 85,736.02 : x
  2. Step 2: Convert to fraction form
    225,878.98/338,617.45 = 85,736.02/x
  3. Step 3: Cross multiply
    225,878.98x = 338,617.45 × 85,736.02
  4. Step 4: Simplify right side
    225,878.98x = 29,031,712,465.55
  5. Step 5: Solve for x
    x = 29,031,712,465.55/225,878.98
  6. Step 6: Final answer
    x = 128,527.73

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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.