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Finding the Fourth Proportional to 218,357.92, 301,330.44 and 122,864.56

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Solution

The fourth proportional to 218,357.92, 301,330.44 and 122,864.56 is: 169,551.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,357.92 : 301,330.44 = 122,864.56 : x
  2. Step 2: Convert to fraction form
    218,357.92/301,330.44 = 122,864.56/x
  3. Step 3: Cross multiply
    218,357.92x = 301,330.44 × 122,864.56
  4. Step 4: Simplify right side
    218,357.92x = 37,022,831,925.21
  5. Step 5: Solve for x
    x = 37,022,831,925.21/218,357.92
  6. Step 6: Final answer
    x = 169,551.13

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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.