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Finding the Fourth Proportional to 260,663.52, 391,026.06 and 83,108.28

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Solution

The fourth proportional to 260,663.52, 391,026.06 and 83,108.28 is: 124,672.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,663.52 : 391,026.06 = 83,108.28 : x
  2. Step 2: Convert to fraction form
    260,663.52/391,026.06 = 83,108.28/x
  3. Step 3: Cross multiply
    260,663.52x = 391,026.06 × 83,108.28
  4. Step 4: Simplify right side
    260,663.52x = 32,497,503,281.78
  5. Step 5: Solve for x
    x = 32,497,503,281.78/260,663.52
  6. Step 6: Final answer
    x = 124,672.23

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1.5x scale

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.