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Finding the Fourth Proportional to 291,918.96, 437,891.46 and 89,500.50

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Solution

The fourth proportional to 291,918.96, 437,891.46 and 89,500.50 is: 134,254.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,918.96 : 437,891.46 = 89,500.50 : x
  2. Step 2: Convert to fraction form
    291,918.96/437,891.46 = 89,500.50/x
  3. Step 3: Cross multiply
    291,918.96x = 437,891.46 × 89,500.50
  4. Step 4: Simplify right side
    291,918.96x = 39,191,504,615.73
  5. Step 5: Solve for x
    x = 39,191,504,615.73/291,918.96
  6. Step 6: Final answer
    x = 134,254.74

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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.