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Finding the Fourth Proportional to 218,586.56, 301,637.42 and 120,450.47

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Solution

The fourth proportional to 218,586.56, 301,637.42 and 120,450.47 is: 166,215.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,586.56 : 301,637.42 = 120,450.47 : x
  2. Step 2: Convert to fraction form
    218,586.56/301,637.42 = 120,450.47/x
  3. Step 3: Cross multiply
    218,586.56x = 301,637.42 × 120,450.47
  4. Step 4: Simplify right side
    218,586.56x = 36,332,369,008.59
  5. Step 5: Solve for x
    x = 36,332,369,008.59/218,586.56
  6. Step 6: Final answer
    x = 166,215.02

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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.