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Finding the Fourth Proportional to 220,917.65, 304,855.49 and 125,411.81

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Solution

The fourth proportional to 220,917.65, 304,855.49 and 125,411.81 is: 173,062.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,917.65 : 304,855.49 = 125,411.81 : x
  2. Step 2: Convert to fraction form
    220,917.65/304,855.49 = 125,411.81/x
  3. Step 3: Cross multiply
    220,917.65x = 304,855.49 × 125,411.81
  4. Step 4: Simplify right side
    220,917.65x = 38,232,477,578.59
  5. Step 5: Solve for x
    x = 38,232,477,578.59/220,917.65
  6. Step 6: Final answer
    x = 173,062.13

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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.