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Finding the Fourth Proportional to 306,235.59, 422,542.98 and 178,886.58

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Solution

The fourth proportional to 306,235.59, 422,542.98 and 178,886.58 is: 246,827.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,235.59 : 422,542.98 = 178,886.58 : x
  2. Step 2: Convert to fraction form
    306,235.59/422,542.98 = 178,886.58/x
  3. Step 3: Cross multiply
    306,235.59x = 422,542.98 × 178,886.58
  4. Step 4: Simplify right side
    306,235.59x = 75,587,267,010.67
  5. Step 5: Solve for x
    x = 75,587,267,010.67/306,235.59
  6. Step 6: Final answer
    x = 246,827.18

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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.