Home / 260,011.20-390,146.40-147,777.60

Finding the Fourth Proportional to 260,011.20, 390,146.40 and 147,777.60

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Solution

The fourth proportional to 260,011.20, 390,146.40 and 147,777.60 is: 221,740.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,011.20 : 390,146.40 = 147,777.60 : x
  2. Step 2: Convert to fraction form
    260,011.20/390,146.40 = 147,777.60/x
  3. Step 3: Cross multiply
    260,011.20x = 390,146.40 × 147,777.60
  4. Step 4: Simplify right side
    260,011.20x = 57,654,898,640.64
  5. Step 5: Solve for x
    x = 57,654,898,640.64/260,011.20
  6. Step 6: Final answer
    x = 221,740.06

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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.