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Finding the Fourth Proportional to 306,763.29, 423,329.31 and 177,719.34

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Solution

The fourth proportional to 306,763.29, 423,329.31 and 177,719.34 is: 245,250.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,763.29 : 423,329.31 = 177,719.34 : x
  2. Step 2: Convert to fraction form
    306,763.29/423,329.31 = 177,719.34/x
  3. Step 3: Cross multiply
    306,763.29x = 423,329.31 × 177,719.34
  4. Step 4: Simplify right side
    306,763.29x = 75,233,805,575.86
  5. Step 5: Solve for x
    x = 75,233,805,575.86/306,763.29
  6. Step 6: Final answer
    x = 245,250.35

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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.