Home / 260,023.20-390,164.40-147,789.60

Finding the Fourth Proportional to 260,023.20, 390,164.40 and 147,789.60

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Solution

The fourth proportional to 260,023.20, 390,164.40 and 147,789.60 is: 221,758.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,023.20 : 390,164.40 = 147,789.60 : x
  2. Step 2: Convert to fraction form
    260,023.20/390,164.40 = 147,789.60/x
  3. Step 3: Cross multiply
    260,023.20x = 390,164.40 × 147,789.60
  4. Step 4: Simplify right side
    260,023.20x = 57,662,240,610.24
  5. Step 5: Solve for x
    x = 57,662,240,610.24/260,023.20
  6. Step 6: Final answer
    x = 221,758.06

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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.