Home / 260,099.20-390,278.40-147,865.60

Finding the Fourth Proportional to 260,099.20, 390,278.40 and 147,865.60

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Solution

The fourth proportional to 260,099.20, 390,278.40 and 147,865.60 is: 221,872.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,099.20 : 390,278.40 = 147,865.60 : x
  2. Step 2: Convert to fraction form
    260,099.20/390,278.40 = 147,865.60/x
  3. Step 3: Cross multiply
    260,099.20x = 390,278.40 × 147,865.60
  4. Step 4: Simplify right side
    260,099.20x = 57,708,749,783.04
  5. Step 5: Solve for x
    x = 57,708,749,783.04/260,099.20
  6. Step 6: Final answer
    x = 221,872.08

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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.