Home / 259,742.80-389,614.20-147,768.40

Finding the Fourth Proportional to 259,742.80, 389,614.20 and 147,768.40

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Solution

The fourth proportional to 259,742.80, 389,614.20 and 147,768.40 is: 221,652.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,742.80 : 389,614.20 = 147,768.40 : x
  2. Step 2: Convert to fraction form
    259,742.80/389,614.20 = 147,768.40/x
  3. Step 3: Cross multiply
    259,742.80x = 389,614.20 × 147,768.40
  4. Step 4: Simplify right side
    259,742.80x = 57,572,666,951.28
  5. Step 5: Solve for x
    x = 57,572,666,951.28/259,742.80
  6. Step 6: Final answer
    x = 221,652.60

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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.