Home / 257,470.65-386,111.12-88,947.72

Finding the Fourth Proportional to 257,470.65, 386,111.12 and 88,947.72

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Solution

The fourth proportional to 257,470.65, 386,111.12 and 88,947.72 is: 133,388.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,470.65 : 386,111.12 = 88,947.72 : x
  2. Step 2: Convert to fraction form
    257,470.65/386,111.12 = 88,947.72/x
  3. Step 3: Cross multiply
    257,470.65x = 386,111.12 × 88,947.72
  4. Step 4: Simplify right side
    257,470.65x = 34,343,703,345.91
  5. Step 5: Solve for x
    x = 34,343,703,345.91/257,470.65
  6. Step 6: Final answer
    x = 133,388.81

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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.