Home / 259,750.40-389,431.20-141,555.20

Finding the Fourth Proportional to 259,750.40, 389,431.20 and 141,555.20

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Solution

The fourth proportional to 259,750.40, 389,431.20 and 141,555.20 is: 212,226.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,750.40 : 389,431.20 = 141,555.20 : x
  2. Step 2: Convert to fraction form
    259,750.40/389,431.20 = 141,555.20/x
  3. Step 3: Cross multiply
    259,750.40x = 389,431.20 × 141,555.20
  4. Step 4: Simplify right side
    259,750.40x = 55,126,011,402.24
  5. Step 5: Solve for x
    x = 55,126,011,402.24/259,750.40
  6. Step 6: Final answer
    x = 212,226.86

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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.