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Finding the Fourth Proportional to 257,898.88, 386,726.28 and 95,739.64

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Solution

The fourth proportional to 257,898.88, 386,726.28 and 95,739.64 is: 143,564.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,898.88 : 386,726.28 = 95,739.64 : x
  2. Step 2: Convert to fraction form
    257,898.88/386,726.28 = 95,739.64/x
  3. Step 3: Cross multiply
    257,898.88x = 386,726.28 × 95,739.64
  4. Step 4: Simplify right side
    257,898.88x = 37,025,034,825.74
  5. Step 5: Solve for x
    x = 37,025,034,825.74/257,898.88
  6. Step 6: Final answer
    x = 143,564.16

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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.