Home / 259,780.40-389,476.20-141,585.20

Finding the Fourth Proportional to 259,780.40, 389,476.20 and 141,585.20

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Solution

The fourth proportional to 259,780.40, 389,476.20 and 141,585.20 is: 212,271.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,780.40 : 389,476.20 = 141,585.20 : x
  2. Step 2: Convert to fraction form
    259,780.40/389,476.20 = 141,585.20/x
  3. Step 3: Cross multiply
    259,780.40x = 389,476.20 × 141,585.20
  4. Step 4: Simplify right side
    259,780.40x = 55,144,065,672.24
  5. Step 5: Solve for x
    x = 55,144,065,672.24/259,780.40
  6. Step 6: Final answer
    x = 212,271.85

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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.