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Finding the Fourth Proportional to 265,872.59, 398,886.11 and 85,954.18

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Solution

The fourth proportional to 265,872.59, 398,886.11 and 85,954.18 is: 128,956.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,872.59 : 398,886.11 = 85,954.18 : x
  2. Step 2: Convert to fraction form
    265,872.59/398,886.11 = 85,954.18/x
  3. Step 3: Cross multiply
    265,872.59x = 398,886.11 × 85,954.18
  4. Step 4: Simplify right side
    265,872.59x = 34,285,926,074.24
  5. Step 5: Solve for x
    x = 34,285,926,074.24/265,872.59
  6. Step 6: Final answer
    x = 128,956.23

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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.