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Finding the Fourth Proportional to 360,979.20, 498,203.85 and 207,987.85

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Solution

The fourth proportional to 360,979.20, 498,203.85 and 207,987.85 is: 287,053.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,979.20 : 498,203.85 = 207,987.85 : x
  2. Step 2: Convert to fraction form
    360,979.20/498,203.85 = 207,987.85/x
  3. Step 3: Cross multiply
    360,979.20x = 498,203.85 × 207,987.85
  4. Step 4: Simplify right side
    360,979.20x = 103,620,344,092.26
  5. Step 5: Solve for x
    x = 103,620,344,092.26/360,979.20
  6. Step 6: Final answer
    x = 287,053.50

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1.5x scale

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.