Home / 287,975,287.31-431,982,085.40-101,206,641.85

Finding the Fourth Proportional to 287,975,287.31, 431,982,085.40 and 101,206,641.85

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Solution

The fourth proportional to 287,975,287.31, 431,982,085.40 and 101,206,641.85 is: 151,816,694.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,975,287.31 : 431,982,085.40 = 101,206,641.85 : x
  2. Step 2: Convert to fraction form
    287,975,287.31/431,982,085.40 = 101,206,641.85/x
  3. Step 3: Cross multiply
    287,975,287.31x = 431,982,085.40 × 101,206,641.85
  4. Step 4: Simplify right side
    287,975,287.31x = 43,719,456,200,027,968
  5. Step 5: Solve for x
    x = 43,719,456,200,027,968/287,975,287.31
  6. Step 6: Final answer
    x = 151,816,694.44

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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.