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Finding the Fourth Proportional to 295,081.20, 442,621.80 and 288,520.20

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Solution

The fourth proportional to 295,081.20, 442,621.80 and 288,520.20 is: 432,780.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,081.20 : 442,621.80 = 288,520.20 : x
  2. Step 2: Convert to fraction form
    295,081.20/442,621.80 = 288,520.20/x
  3. Step 3: Cross multiply
    295,081.20x = 442,621.80 × 288,520.20
  4. Step 4: Simplify right side
    295,081.20x = 127,705,330,260.36
  5. Step 5: Solve for x
    x = 127,705,330,260.36/295,081.20
  6. Step 6: Final answer
    x = 432,780.30

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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.