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Finding the Fourth Proportional to 291,381.80, 437,072.70 and 113,894.60

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Solution

The fourth proportional to 291,381.80, 437,072.70 and 113,894.60 is: 170,841.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,381.80 : 437,072.70 = 113,894.60 : x
  2. Step 2: Convert to fraction form
    291,381.80/437,072.70 = 113,894.60/x
  3. Step 3: Cross multiply
    291,381.80x = 437,072.70 × 113,894.60
  4. Step 4: Simplify right side
    291,381.80x = 49,780,220,337.42
  5. Step 5: Solve for x
    x = 49,780,220,337.42/291,381.80
  6. Step 6: Final answer
    x = 170,841.90

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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.