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Finding the Fourth Proportional to 291,857.88, 437,799.98 and 89,439.40

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Solution

The fourth proportional to 291,857.88, 437,799.98 and 89,439.40 is: 134,163.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,857.88 : 437,799.98 = 89,439.40 : x
  2. Step 2: Convert to fraction form
    291,857.88/437,799.98 = 89,439.40/x
  3. Step 3: Cross multiply
    291,857.88x = 437,799.98 × 89,439.40
  4. Step 4: Simplify right side
    291,857.88x = 39,156,567,531.21
  5. Step 5: Solve for x
    x = 39,156,567,531.21/291,857.88
  6. Step 6: Final answer
    x = 134,163.13

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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.