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Finding the Fourth Proportional to 291,489.76, 437,250.28 and 91,825.77

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Solution

The fourth proportional to 291,489.76, 437,250.28 and 91,825.77 is: 137,743.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,489.76 : 437,250.28 = 91,825.77 : x
  2. Step 2: Convert to fraction form
    291,489.76/437,250.28 = 91,825.77/x
  3. Step 3: Cross multiply
    291,489.76x = 437,250.28 × 91,825.77
  4. Step 4: Simplify right side
    291,489.76x = 40,150,843,643.72
  5. Step 5: Solve for x
    x = 40,150,843,643.72/291,489.76
  6. Step 6: Final answer
    x = 137,743.58

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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.