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Finding the Fourth Proportional to 218,254.55, 301,191.35 and 122,761.31

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Solution

The fourth proportional to 218,254.55, 301,191.35 and 122,761.31 is: 169,410.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,254.55 : 301,191.35 = 122,761.31 : x
  2. Step 2: Convert to fraction form
    218,254.55/301,191.35 = 122,761.31/x
  3. Step 3: Cross multiply
    218,254.55x = 301,191.35 × 122,761.31
  4. Step 4: Simplify right side
    218,254.55x = 36,974,642,566.91
  5. Step 5: Solve for x
    x = 36,974,642,566.91/218,254.55
  6. Step 6: Final answer
    x = 169,410.64

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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.