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Finding the Fourth Proportional to 287,081.01, 396,260.15 and 185,106.69

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Solution

The fourth proportional to 287,081.01, 396,260.15 and 185,106.69 is: 255,504.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,081.01 : 396,260.15 = 185,106.69 : x
  2. Step 2: Convert to fraction form
    287,081.01/396,260.15 = 185,106.69/x
  3. Step 3: Cross multiply
    287,081.01x = 396,260.15 × 185,106.69
  4. Step 4: Simplify right side
    287,081.01x = 73,350,403,819.87
  5. Step 5: Solve for x
    x = 73,350,403,819.87/287,081.01
  6. Step 6: Final answer
    x = 255,504.20

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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.