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Finding the Fourth Proportional to 326,641.82, 489,962.72 and 89,984.52

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Solution

The fourth proportional to 326,641.82, 489,962.72 and 89,984.52 is: 134,976.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,641.82 : 489,962.72 = 89,984.52 : x
  2. Step 2: Convert to fraction form
    326,641.82/489,962.72 = 89,984.52/x
  3. Step 3: Cross multiply
    326,641.82x = 489,962.72 × 89,984.52
  4. Step 4: Simplify right side
    326,641.82x = 44,089,060,402.06
  5. Step 5: Solve for x
    x = 44,089,060,402.06/326,641.82
  6. Step 6: Final answer
    x = 134,976.78

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Similar ratio
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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.