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Finding the Fourth Proportional to 312,448.62, 431,179.47 and 169,208.88

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Solution

The fourth proportional to 312,448.62, 431,179.47 and 169,208.88 is: 233,508.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,448.62 : 431,179.47 = 169,208.88 : x
  2. Step 2: Convert to fraction form
    312,448.62/431,179.47 = 169,208.88/x
  3. Step 3: Cross multiply
    312,448.62x = 431,179.47 × 169,208.88
  4. Step 4: Simplify right side
    312,448.62x = 72,959,395,197.69
  5. Step 5: Solve for x
    x = 72,959,395,197.69/312,448.62
  6. Step 6: Final answer
    x = 233,508.46

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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.