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Finding the Fourth Proportional to 291,728.57, 437,592.92 and 92,064.51

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Solution

The fourth proportional to 291,728.57, 437,592.92 and 92,064.51 is: 138,096.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,728.57 : 437,592.92 = 92,064.51 : x
  2. Step 2: Convert to fraction form
    291,728.57/437,592.92 = 92,064.51/x
  3. Step 3: Cross multiply
    291,728.57x = 437,592.92 × 92,064.51
  4. Step 4: Simplify right side
    291,728.57x = 40,286,777,298.95
  5. Step 5: Solve for x
    x = 40,286,777,298.95/291,728.57
  6. Step 6: Final answer
    x = 138,096.79

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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.