Home / 260,947.24-391,440.06-81,009.08

Finding the Fourth Proportional to 260,947.24, 391,440.06 and 81,009.08

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Solution

The fourth proportional to 260,947.24, 391,440.06 and 81,009.08 is: 121,519.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,947.24 : 391,440.06 = 81,009.08 : x
  2. Step 2: Convert to fraction form
    260,947.24/391,440.06 = 81,009.08/x
  3. Step 3: Cross multiply
    260,947.24x = 391,440.06 × 81,009.08
  4. Step 4: Simplify right side
    260,947.24x = 31,710,199,135.74
  5. Step 5: Solve for x
    x = 31,710,199,135.74/260,947.24
  6. Step 6: Final answer
    x = 121,519.58

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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.