Home / 257,339.52-386,088.66-115,304.40

Finding the Fourth Proportional to 257,339.52, 386,088.66 and 115,304.40

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Solution

The fourth proportional to 257,339.52, 386,088.66 and 115,304.40 is: 172,992.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,339.52 : 386,088.66 = 115,304.40 : x
  2. Step 2: Convert to fraction form
    257,339.52/386,088.66 = 115,304.40/x
  3. Step 3: Cross multiply
    257,339.52x = 386,088.66 × 115,304.40
  4. Step 4: Simplify right side
    257,339.52x = 44,517,721,288.10
  5. Step 5: Solve for x
    x = 44,517,721,288.10/257,339.52
  6. Step 6: Final answer
    x = 172,992.17

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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.