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Finding the Fourth Proportional to 265,672.80, 398,768.40 and 132,703.20

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Solution

The fourth proportional to 265,672.80, 398,768.40 and 132,703.20 is: 199,184.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,672.80 : 398,768.40 = 132,703.20 : x
  2. Step 2: Convert to fraction form
    265,672.80/398,768.40 = 132,703.20/x
  3. Step 3: Cross multiply
    265,672.80x = 398,768.40 × 132,703.20
  4. Step 4: Simplify right side
    265,672.80x = 52,917,842,738.88
  5. Step 5: Solve for x
    x = 52,917,842,738.88/265,672.80
  6. Step 6: Final answer
    x = 199,184.27

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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.