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Finding the Fourth Proportional to 306,844.80, 423,401.76 and 179,496.32

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Solution

The fourth proportional to 306,844.80, 423,401.76 and 179,496.32 is: 247,679.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,844.80 : 423,401.76 = 179,496.32 : x
  2. Step 2: Convert to fraction form
    306,844.80/423,401.76 = 179,496.32/x
  3. Step 3: Cross multiply
    306,844.80x = 423,401.76 × 179,496.32
  4. Step 4: Simplify right side
    306,844.80x = 75,999,057,801.52
  5. Step 5: Solve for x
    x = 75,999,057,801.52/306,844.80
  6. Step 6: Final answer
    x = 247,679.15

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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.