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Finding the Fourth Proportional to 306,354.30, 422,706.36 and 179,005.28

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Solution

The fourth proportional to 306,354.30, 422,706.36 and 179,005.28 is: 246,990.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,354.30 : 422,706.36 = 179,005.28 : x
  2. Step 2: Convert to fraction form
    306,354.30/422,706.36 = 179,005.28/x
  3. Step 3: Cross multiply
    306,354.30x = 422,706.36 × 179,005.28
  4. Step 4: Simplify right side
    306,354.30x = 75,666,670,329.58
  5. Step 5: Solve for x
    x = 75,666,670,329.58/306,354.30
  6. Step 6: Final answer
    x = 246,990.72

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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.