Home / 259,657.20-389,615.40-147,423.60

Finding the Fourth Proportional to 259,657.20, 389,615.40 and 147,423.60

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Solution

The fourth proportional to 259,657.20, 389,615.40 and 147,423.60 is: 221,208.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,657.20 : 389,615.40 = 147,423.60 : x
  2. Step 2: Convert to fraction form
    259,657.20/389,615.40 = 147,423.60/x
  3. Step 3: Cross multiply
    259,657.20x = 389,615.40 × 147,423.60
  4. Step 4: Simplify right side
    259,657.20x = 57,438,504,883.44
  5. Step 5: Solve for x
    x = 57,438,504,883.44/259,657.20
  6. Step 6: Final answer
    x = 221,208.98

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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.