Home / 257,976.23-386,787.69-131,371.40

Finding the Fourth Proportional to 257,976.23, 386,787.69 and 131,371.40

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Solution

The fourth proportional to 257,976.23, 386,787.69 and 131,371.40 is: 196,967.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,976.23 : 386,787.69 = 131,371.40 : x
  2. Step 2: Convert to fraction form
    257,976.23/386,787.69 = 131,371.40/x
  3. Step 3: Cross multiply
    257,976.23x = 386,787.69 × 131,371.40
  4. Step 4: Simplify right side
    257,976.23x = 50,812,838,404.13
  5. Step 5: Solve for x
    x = 50,812,838,404.13/257,976.23
  6. Step 6: Final answer
    x = 196,967.14

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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.