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Finding the Fourth Proportional to 291,471.20, 437,272.60 and 89,085.68

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Solution

The fourth proportional to 291,471.20, 437,272.60 and 89,085.68 is: 133,648.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,471.20 : 437,272.60 = 89,085.68 : x
  2. Step 2: Convert to fraction form
    291,471.20/437,272.60 = 89,085.68/x
  3. Step 3: Cross multiply
    291,471.20x = 437,272.60 × 89,085.68
  4. Step 4: Simplify right side
    291,471.20x = 38,954,726,916.37
  5. Step 5: Solve for x
    x = 38,954,726,916.37/291,471.20
  6. Step 6: Final answer
    x = 133,648.63

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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.