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Finding the Fourth Proportional to 326,200.20, 489,300.30 and 247,468.20

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Solution

The fourth proportional to 326,200.20, 489,300.30 and 247,468.20 is: 371,202.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,200.20 : 489,300.30 = 247,468.20 : x
  2. Step 2: Convert to fraction form
    326,200.20/489,300.30 = 247,468.20/x
  3. Step 3: Cross multiply
    326,200.20x = 489,300.30 × 247,468.20
  4. Step 4: Simplify right side
    326,200.20x = 121,086,264,500.46
  5. Step 5: Solve for x
    x = 121,086,264,500.46/326,200.20
  6. Step 6: Final answer
    x = 371,202.30

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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.