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Finding the Fourth Proportional to 268,896.64, 370,679.52 and 172,089.76

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Solution

The fourth proportional to 268,896.64, 370,679.52 and 172,089.76 is: 237,229.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,896.64 : 370,679.52 = 172,089.76 : x
  2. Step 2: Convert to fraction form
    268,896.64/370,679.52 = 172,089.76/x
  3. Step 3: Cross multiply
    268,896.64x = 370,679.52 × 172,089.76
  4. Step 4: Simplify right side
    268,896.64x = 63,790,149,633.72
  5. Step 5: Solve for x
    x = 63,790,149,633.72/268,896.64
  6. Step 6: Final answer
    x = 237,229.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.