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Finding the Fourth Proportional to 308,229.21, 425,347.83 and 172,263.69

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Solution

The fourth proportional to 308,229.21, 425,347.83 and 172,263.69 is: 237,719.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,229.21 : 425,347.83 = 172,263.69 : x
  2. Step 2: Convert to fraction form
    308,229.21/425,347.83 = 172,263.69/x
  3. Step 3: Cross multiply
    308,229.21x = 425,347.83 × 172,263.69
  4. Step 4: Simplify right side
    308,229.21x = 73,271,986,729.29
  5. Step 5: Solve for x
    x = 73,271,986,729.29/308,229.21
  6. Step 6: Final answer
    x = 237,719.15

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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.