Home / 257,960.40-386,422.20-173,979.60

Finding the Fourth Proportional to 257,960.40, 386,422.20 and 173,979.60

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Solution

The fourth proportional to 257,960.40, 386,422.20 and 173,979.60 is: 260,619.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,960.40 : 386,422.20 = 173,979.60 : x
  2. Step 2: Convert to fraction form
    257,960.40/386,422.20 = 173,979.60/x
  3. Step 3: Cross multiply
    257,960.40x = 386,422.20 × 173,979.60
  4. Step 4: Simplify right side
    257,960.40x = 67,229,579,787.12
  5. Step 5: Solve for x
    x = 67,229,579,787.12/257,960.40
  6. Step 6: Final answer
    x = 260,619.77

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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.