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Finding the Fourth Proportional to 291,265.59, 436,917.21 and 91,593.72

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Solution

The fourth proportional to 291,265.59, 436,917.21 and 91,593.72 is: 137,396.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,265.59 : 436,917.21 = 91,593.72 : x
  2. Step 2: Convert to fraction form
    291,265.59/436,917.21 = 91,593.72/x
  3. Step 3: Cross multiply
    291,265.59x = 436,917.21 × 91,593.72
  4. Step 4: Simplify right side
    291,265.59x = 40,018,872,595.92
  5. Step 5: Solve for x
    x = 40,018,872,595.92/291,265.59
  6. Step 6: Final answer
    x = 137,396.50

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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.