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Finding the Fourth Proportional to 231,856.20, 347,589.90 and 121,048.20

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Solution

The fourth proportional to 231,856.20, 347,589.90 and 121,048.20 is: 181,470.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,856.20 : 347,589.90 = 121,048.20 : x
  2. Step 2: Convert to fraction form
    231,856.20/347,589.90 = 121,048.20/x
  3. Step 3: Cross multiply
    231,856.20x = 347,589.90 × 121,048.20
  4. Step 4: Simplify right side
    231,856.20x = 42,075,131,733.18
  5. Step 5: Solve for x
    x = 42,075,131,733.18/231,856.20
  6. Step 6: Final answer
    x = 181,470.81

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1.5x scale

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.