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Finding the Fourth Proportional to 265,532, 398,337.32 and 85,557.12

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Solution

The fourth proportional to 265,532, 398,337.32 and 85,557.12 is: 128,348.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,532 : 398,337.32 = 85,557.12 : x
  2. Step 2: Convert to fraction form
    265,532/398,337.32 = 85,557.12/x
  3. Step 3: Cross multiply
    265,532x = 398,337.32 × 85,557.12
  4. Step 4: Simplify right side
    265,532x = 34,080,593,887.72
  5. Step 5: Solve for x
    x = 34,080,593,887.72/265,532
  6. Step 6: Final answer
    x = 128,348.35

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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.