Home / 638,922.80-958,498.96-218,100.28

Finding the Fourth Proportional to 638,922.80, 958,498.96 and 218,100.28

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Solution

The fourth proportional to 638,922.80, 958,498.96 and 218,100.28 is: 327,189.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,922.80 : 958,498.96 = 218,100.28 : x
  2. Step 2: Convert to fraction form
    638,922.80/958,498.96 = 218,100.28/x
  3. Step 3: Cross multiply
    638,922.80x = 958,498.96 × 218,100.28
  4. Step 4: Simplify right side
    638,922.80x = 209,048,891,555.71
  5. Step 5: Solve for x
    x = 209,048,891,555.71/638,922.80
  6. Step 6: Final answer
    x = 327,189.59

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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.