Home / 260,521.20-390,911.40-148,287.60

Finding the Fourth Proportional to 260,521.20, 390,911.40 and 148,287.60

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Solution

The fourth proportional to 260,521.20, 390,911.40 and 148,287.60 is: 222,505.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,521.20 : 390,911.40 = 148,287.60 : x
  2. Step 2: Convert to fraction form
    260,521.20/390,911.40 = 148,287.60/x
  3. Step 3: Cross multiply
    260,521.20x = 390,911.40 × 148,287.60
  4. Step 4: Simplify right side
    260,521.20x = 57,967,313,318.64
  5. Step 5: Solve for x
    x = 57,967,313,318.64/260,521.20
  6. Step 6: Final answer
    x = 222,505.17

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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.