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Finding the Fourth Proportional to 291,826.74, 437,791.95 and 99,690.69

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Solution

The fourth proportional to 291,826.74, 437,791.95 and 99,690.69 is: 149,553.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,826.74 : 437,791.95 = 99,690.69 : x
  2. Step 2: Convert to fraction form
    291,826.74/437,791.95 = 99,690.69/x
  3. Step 3: Cross multiply
    291,826.74x = 437,791.95 × 99,690.69
  4. Step 4: Simplify right side
    291,826.74x = 43,643,781,571.95
  5. Step 5: Solve for x
    x = 43,643,781,571.95/291,826.74
  6. Step 6: Final answer
    x = 149,553.74

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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.