Home / 259,078.20-388,617.30-148,281.40

Finding the Fourth Proportional to 259,078.20, 388,617.30 and 148,281.40

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Solution

The fourth proportional to 259,078.20, 388,617.30 and 148,281.40 is: 222,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,078.20 : 388,617.30 = 148,281.40 : x
  2. Step 2: Convert to fraction form
    259,078.20/388,617.30 = 148,281.40/x
  3. Step 3: Cross multiply
    259,078.20x = 388,617.30 × 148,281.40
  4. Step 4: Simplify right side
    259,078.20x = 57,624,717,308.22
  5. Step 5: Solve for x
    x = 57,624,717,308.22/259,078.20
  6. Step 6: Final answer
    x = 222,422.10

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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.