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Finding the Fourth Proportional to 225,021.44, 309,995.71 and 156,914.62

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Solution

The fourth proportional to 225,021.44, 309,995.71 and 156,914.62 is: 216,169.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,021.44 : 309,995.71 = 156,914.62 : x
  2. Step 2: Convert to fraction form
    225,021.44/309,995.71 = 156,914.62/x
  3. Step 3: Cross multiply
    225,021.44x = 309,995.71 × 156,914.62
  4. Step 4: Simplify right side
    225,021.44x = 48,642,857,869.00
  5. Step 5: Solve for x
    x = 48,642,857,869.00/225,021.44
  6. Step 6: Final answer
    x = 216,169.88

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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.