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Finding the Fourth Proportional to 291,659.09, 437,645.48 and 281,043.15

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Solution

The fourth proportional to 291,659.09, 437,645.48 and 281,043.15 is: 421,715.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,659.09 : 437,645.48 = 281,043.15 : x
  2. Step 2: Convert to fraction form
    291,659.09/437,645.48 = 281,043.15/x
  3. Step 3: Cross multiply
    291,659.09x = 437,645.48 × 281,043.15
  4. Step 4: Simplify right side
    291,659.09x = 122,997,263,343.90
  5. Step 5: Solve for x
    x = 122,997,263,343.90/291,659.09
  6. Step 6: Final answer
    x = 421,715.86

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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.