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Finding the Fourth Proportional to 326,217.70, 489,326.55 and 292,003.30

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Solution

The fourth proportional to 326,217.70, 489,326.55 and 292,003.30 is: 438,004.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,217.70 : 489,326.55 = 292,003.30 : x
  2. Step 2: Convert to fraction form
    326,217.70/489,326.55 = 292,003.30/x
  3. Step 3: Cross multiply
    326,217.70x = 489,326.55 × 292,003.30
  4. Step 4: Simplify right side
    326,217.70x = 142,884,967,377.62
  5. Step 5: Solve for x
    x = 142,884,967,377.62/326,217.70
  6. Step 6: Final answer
    x = 438,004.95

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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.