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Finding the Fourth Proportional to 287,218.48, 396,103.47 and 179,798.30

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Solution

The fourth proportional to 287,218.48, 396,103.47 and 179,798.30 is: 247,960.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,218.48 : 396,103.47 = 179,798.30 : x
  2. Step 2: Convert to fraction form
    287,218.48/396,103.47 = 179,798.30/x
  3. Step 3: Cross multiply
    287,218.48x = 396,103.47 × 179,798.30
  4. Step 4: Simplify right side
    287,218.48x = 71,218,730,530.10
  5. Step 5: Solve for x
    x = 71,218,730,530.10/287,218.48
  6. Step 6: Final answer
    x = 247,960.13

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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.