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Finding the Fourth Proportional to 306,350.30, 422,700.84 and 179,001.28

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Solution

The fourth proportional to 306,350.30, 422,700.84 and 179,001.28 is: 246,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,350.30 : 422,700.84 = 179,001.28 : x
  2. Step 2: Convert to fraction form
    306,350.30/422,700.84 = 179,001.28/x
  3. Step 3: Cross multiply
    306,350.30x = 422,700.84 × 179,001.28
  4. Step 4: Simplify right side
    306,350.30x = 75,663,991,417.08
  5. Step 5: Solve for x
    x = 75,663,991,417.08/306,350.30
  6. Step 6: Final answer
    x = 246,985.20

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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.