Home / 259,966.20-390,078.90-147,732.60

Finding the Fourth Proportional to 259,966.20, 390,078.90 and 147,732.60

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Solution

The fourth proportional to 259,966.20, 390,078.90 and 147,732.60 is: 221,672.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,966.20 : 390,078.90 = 147,732.60 : x
  2. Step 2: Convert to fraction form
    259,966.20/390,078.90 = 147,732.60/x
  3. Step 3: Cross multiply
    259,966.20x = 390,078.90 × 147,732.60
  4. Step 4: Simplify right side
    259,966.20x = 57,627,370,102.14
  5. Step 5: Solve for x
    x = 57,627,370,102.14/259,966.20
  6. Step 6: Final answer
    x = 221,672.55

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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.