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Finding the Fourth Proportional to 291,708.80, 437,563.20 and 272,025.80

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Solution

The fourth proportional to 291,708.80, 437,563.20 and 272,025.80 is: 408,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,708.80 : 437,563.20 = 272,025.80 : x
  2. Step 2: Convert to fraction form
    291,708.80/437,563.20 = 272,025.80/x
  3. Step 3: Cross multiply
    291,708.80x = 437,563.20 × 272,025.80
  4. Step 4: Simplify right side
    291,708.80x = 119,028,479,530.56
  5. Step 5: Solve for x
    x = 119,028,479,530.56/291,708.80
  6. Step 6: Final answer
    x = 408,038.70

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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.