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Finding the Fourth Proportional to 326,862.92, 490,322.55 and 90,205.60

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Solution

The fourth proportional to 326,862.92, 490,322.55 and 90,205.60 is: 135,316.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,862.92 : 490,322.55 = 90,205.60 : x
  2. Step 2: Convert to fraction form
    326,862.92/490,322.55 = 90,205.60/x
  3. Step 3: Cross multiply
    326,862.92x = 490,322.55 × 90,205.60
  4. Step 4: Simplify right side
    326,862.92x = 44,229,838,590.47
  5. Step 5: Solve for x
    x = 44,229,838,590.47/326,862.92
  6. Step 6: Final answer
    x = 135,316.17

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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.