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Finding the Fourth Proportional to 215,065.10, 322,663.26 and 109,957.88

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Solution

The fourth proportional to 215,065.10, 322,663.26 and 109,957.88 is: 164,970.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,065.10 : 322,663.26 = 109,957.88 : x
  2. Step 2: Convert to fraction form
    215,065.10/322,663.26 = 109,957.88/x
  3. Step 3: Cross multiply
    215,065.10x = 322,663.26 × 109,957.88
  4. Step 4: Simplify right side
    215,065.10x = 35,479,368,023.49
  5. Step 5: Solve for x
    x = 35,479,368,023.49/215,065.10
  6. Step 6: Final answer
    x = 164,970.36

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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.