Home / 386,531.25-533,438.36-223,194.65

Finding the Fourth Proportional to 386,531.25, 533,438.36 and 223,194.65

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Solution

The fourth proportional to 386,531.25, 533,438.36 and 223,194.65 is: 308,023.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,531.25 : 533,438.36 = 223,194.65 : x
  2. Step 2: Convert to fraction form
    386,531.25/533,438.36 = 223,194.65/x
  3. Step 3: Cross multiply
    386,531.25x = 533,438.36 × 223,194.65
  4. Step 4: Simplify right side
    386,531.25x = 119,060,586,940.80
  5. Step 5: Solve for x
    x = 119,060,586,940.80/386,531.25
  6. Step 6: Final answer
    x = 308,023.19

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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.