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Finding the Fourth Proportional to 291,931.25, 437,894.25 and 92,251.67

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Solution

The fourth proportional to 291,931.25, 437,894.25 and 92,251.67 is: 138,376.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,931.25 : 437,894.25 = 92,251.67 : x
  2. Step 2: Convert to fraction form
    291,931.25/437,894.25 = 92,251.67/x
  3. Step 3: Cross multiply
    291,931.25x = 437,894.25 × 92,251.67
  4. Step 4: Simplify right side
    291,931.25x = 40,396,475,845.90
  5. Step 5: Solve for x
    x = 40,396,475,845.90/291,931.25
  6. Step 6: Final answer
    x = 138,376.68

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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.