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Finding the Fourth Proportional to 326,701.92, 489,964.38 and 89,988.30

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Solution

The fourth proportional to 326,701.92, 489,964.38 and 89,988.30 is: 134,958.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,701.92 : 489,964.38 = 89,988.30 : x
  2. Step 2: Convert to fraction form
    326,701.92/489,964.38 = 89,988.30/x
  3. Step 3: Cross multiply
    326,701.92x = 489,964.38 × 89,988.30
  4. Step 4: Simplify right side
    326,701.92x = 44,091,061,616.75
  5. Step 5: Solve for x
    x = 44,091,061,616.75/326,701.92
  6. Step 6: Final answer
    x = 134,958.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.