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Finding the Fourth Proportional to 291,739.60, 437,570.52 and 81,359.92

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Solution

The fourth proportional to 291,739.60, 437,570.52 and 81,359.92 is: 122,029.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,739.60 : 437,570.52 = 81,359.92 : x
  2. Step 2: Convert to fraction form
    291,739.60/437,570.52 = 81,359.92/x
  3. Step 3: Cross multiply
    291,739.60x = 437,570.52 × 81,359.92
  4. Step 4: Simplify right side
    291,739.60x = 35,600,702,501.56
  5. Step 5: Solve for x
    x = 35,600,702,501.56/291,739.60
  6. Step 6: Final answer
    x = 122,029.04

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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.