Home / 257,979.36-386,986.11-68,437.07

Finding the Fourth Proportional to 257,979.36, 386,986.11 and 68,437.07

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Solution

The fourth proportional to 257,979.36, 386,986.11 and 68,437.07 is: 102,660.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,979.36 : 386,986.11 = 68,437.07 : x
  2. Step 2: Convert to fraction form
    257,979.36/386,986.11 = 68,437.07/x
  3. Step 3: Cross multiply
    257,979.36x = 386,986.11 × 68,437.07
  4. Step 4: Simplify right side
    257,979.36x = 26,484,194,758.73
  5. Step 5: Solve for x
    x = 26,484,194,758.73/257,979.36
  6. Step 6: Final answer
    x = 102,660.13

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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.