Home / 260,471.20-390,836.40-148,237.60

Finding the Fourth Proportional to 260,471.20, 390,836.40 and 148,237.60

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Solution

The fourth proportional to 260,471.20, 390,836.40 and 148,237.60 is: 222,430.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,471.20 : 390,836.40 = 148,237.60 : x
  2. Step 2: Convert to fraction form
    260,471.20/390,836.40 = 148,237.60/x
  3. Step 3: Cross multiply
    260,471.20x = 390,836.40 × 148,237.60
  4. Step 4: Simplify right side
    260,471.20x = 57,936,649,928.64
  5. Step 5: Solve for x
    x = 57,936,649,928.64/260,471.20
  6. Step 6: Final answer
    x = 222,430.16

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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.