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Finding the Fourth Proportional to 215,060.76, 322,656.74 and 109,953.56

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Solution

The fourth proportional to 215,060.76, 322,656.74 and 109,953.56 is: 164,963.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,060.76 : 322,656.74 = 109,953.56 : x
  2. Step 2: Convert to fraction form
    215,060.76/322,656.74 = 109,953.56/x
  3. Step 3: Cross multiply
    215,060.76x = 322,656.74 × 109,953.56
  4. Step 4: Simplify right side
    215,060.76x = 35,477,257,220.99
  5. Step 5: Solve for x
    x = 35,477,257,220.99/215,060.76
  6. Step 6: Final answer
    x = 164,963.88

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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.