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Finding the Fourth Proportional to 218,474.16, 301,491 and 122,980.56

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Solution

The fourth proportional to 218,474.16, 301,491 and 122,980.56 is: 169,711.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,474.16 : 301,491 = 122,980.56 : x
  2. Step 2: Convert to fraction form
    218,474.16/301,491 = 122,980.56/x
  3. Step 3: Cross multiply
    218,474.16x = 301,491 × 122,980.56
  4. Step 4: Simplify right side
    218,474.16x = 37,077,532,014.96
  5. Step 5: Solve for x
    x = 37,077,532,014.96/218,474.16
  6. Step 6: Final answer
    x = 169,711.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.