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Finding the Fourth Proportional to 268,530.72, 402,796.05 and 127,862.88

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Solution

The fourth proportional to 268,530.72, 402,796.05 and 127,862.88 is: 191,794.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,530.72 : 402,796.05 = 127,862.88 : x
  2. Step 2: Convert to fraction form
    268,530.72/402,796.05 = 127,862.88/x
  3. Step 3: Cross multiply
    268,530.72x = 402,796.05 × 127,862.88
  4. Step 4: Simplify right side
    268,530.72x = 51,502,663,005.62
  5. Step 5: Solve for x
    x = 51,502,663,005.62/268,530.72
  6. Step 6: Final answer
    x = 191,794.31

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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.