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Finding the Fourth Proportional to 291,713.91, 437,644.67 and 81,351.84

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Solution

The fourth proportional to 291,713.91, 437,644.67 and 81,351.84 is: 122,048.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,713.91 : 437,644.67 = 81,351.84 : x
  2. Step 2: Convert to fraction form
    291,713.91/437,644.67 = 81,351.84/x
  3. Step 3: Cross multiply
    291,713.91x = 437,644.67 × 81,351.84
  4. Step 4: Simplify right side
    291,713.91x = 35,603,200,862.71
  5. Step 5: Solve for x
    x = 35,603,200,862.71/291,713.91
  6. Step 6: Final answer
    x = 122,048.35

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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.