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Finding the Fourth Proportional to 326,612.80, 489,919.25 and 101,992.47

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Solution

The fourth proportional to 326,612.80, 489,919.25 and 101,992.47 is: 152,988.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,612.80 : 489,919.25 = 101,992.47 : x
  2. Step 2: Convert to fraction form
    326,612.80/489,919.25 = 101,992.47/x
  3. Step 3: Cross multiply
    326,612.80x = 489,919.25 × 101,992.47
  4. Step 4: Simplify right side
    326,612.80x = 49,968,074,408.05
  5. Step 5: Solve for x
    x = 49,968,074,408.05/326,612.80
  6. Step 6: Final answer
    x = 152,988.72

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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.