Home / 257,939.52-386,760.28-99,983.44

Finding the Fourth Proportional to 257,939.52, 386,760.28 and 99,983.44

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Solution

The fourth proportional to 257,939.52, 386,760.28 and 99,983.44 is: 149,917.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,939.52 : 386,760.28 = 99,983.44 : x
  2. Step 2: Convert to fraction form
    257,939.52/386,760.28 = 99,983.44/x
  3. Step 3: Cross multiply
    257,939.52x = 386,760.28 × 99,983.44
  4. Step 4: Simplify right side
    257,939.52x = 38,669,623,249.76
  5. Step 5: Solve for x
    x = 38,669,623,249.76/257,939.52
  6. Step 6: Final answer
    x = 149,917.40

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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.