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Finding the Fourth Proportional to 291,702.98, 437,628.27 and 81,340.92

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Solution

The fourth proportional to 291,702.98, 437,628.27 and 81,340.92 is: 122,031.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,702.98 : 437,628.27 = 81,340.92 : x
  2. Step 2: Convert to fraction form
    291,702.98/437,628.27 = 81,340.92/x
  3. Step 3: Cross multiply
    291,702.98x = 437,628.27 × 81,340.92
  4. Step 4: Simplify right side
    291,702.98x = 35,597,086,099.81
  5. Step 5: Solve for x
    x = 35,597,086,099.81/291,702.98
  6. Step 6: Final answer
    x = 122,031.96

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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.