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Finding the Fourth Proportional to 768,131.20, 1,151,851.20 and 294,659.20

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Solution

The fourth proportional to 768,131.20, 1,151,851.20 and 294,659.20 is: 441,856.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,131.20 : 1,151,851.20 = 294,659.20 : x
  2. Step 2: Convert to fraction form
    768,131.20/1,151,851.20 = 294,659.20/x
  3. Step 3: Cross multiply
    768,131.20x = 1,151,851.20 × 294,659.20
  4. Step 4: Simplify right side
    768,131.20x = 339,403,553,111.04
  5. Step 5: Solve for x
    x = 339,403,553,111.04/768,131.20
  6. Step 6: Final answer
    x = 441,856.23

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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.