Home / 218,947.43-328,223.47-78,673.25

Finding the Fourth Proportional to 218,947.43, 328,223.47 and 78,673.25

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Solution

The fourth proportional to 218,947.43, 328,223.47 and 78,673.25 is: 117,938.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,947.43 : 328,223.47 = 78,673.25 : x
  2. Step 2: Convert to fraction form
    218,947.43/328,223.47 = 78,673.25/x
  3. Step 3: Cross multiply
    218,947.43x = 328,223.47 × 78,673.25
  4. Step 4: Simplify right side
    218,947.43x = 25,822,407,111.18
  5. Step 5: Solve for x
    x = 25,822,407,111.18/218,947.43
  6. Step 6: Final answer
    x = 117,938.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.