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Finding the Fourth Proportional to 255,695.20, 384,003.60 and 247,400.80

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Solution

The fourth proportional to 255,695.20, 384,003.60 and 247,400.80 is: 371,547.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,695.20 : 384,003.60 = 247,400.80 : x
  2. Step 2: Convert to fraction form
    255,695.20/384,003.60 = 247,400.80/x
  3. Step 3: Cross multiply
    255,695.20x = 384,003.60 × 247,400.80
  4. Step 4: Simplify right side
    255,695.20x = 95,002,797,842.88
  5. Step 5: Solve for x
    x = 95,002,797,842.88/255,695.20
  6. Step 6: Final answer
    x = 371,547.05

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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.