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Finding the Fourth Proportional to 326,613.39, 489,915.74 and 158,148.78

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Solution

The fourth proportional to 326,613.39, 489,915.74 and 158,148.78 is: 237,221.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,613.39 : 489,915.74 = 158,148.78 : x
  2. Step 2: Convert to fraction form
    326,613.39/489,915.74 = 158,148.78/x
  3. Step 3: Cross multiply
    326,613.39x = 489,915.74 × 158,148.78
  4. Step 4: Simplify right side
    326,613.39x = 77,479,575,793.05
  5. Step 5: Solve for x
    x = 77,479,575,793.05/326,613.39
  6. Step 6: Final answer
    x = 237,221.06

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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.