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Finding the Fourth Proportional to 260,775.70, 391,415.82 and 125,934.28

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Solution

The fourth proportional to 260,775.70, 391,415.82 and 125,934.28 is: 189,023.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,775.70 : 391,415.82 = 125,934.28 : x
  2. Step 2: Convert to fraction form
    260,775.70/391,415.82 = 125,934.28/x
  3. Step 3: Cross multiply
    260,775.70x = 391,415.82 × 125,934.28
  4. Step 4: Simplify right side
    260,775.70x = 49,292,669,472.31
  5. Step 5: Solve for x
    x = 49,292,669,472.31/260,775.70
  6. Step 6: Final answer
    x = 189,023.25

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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.