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Finding the Fourth Proportional to 326,929.50, 490,422.42 and 90,272.22

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Solution

The fourth proportional to 326,929.50, 490,422.42 and 90,272.22 is: 135,416.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,929.50 : 490,422.42 = 90,272.22 : x
  2. Step 2: Convert to fraction form
    326,929.50/490,422.42 = 90,272.22/x
  3. Step 3: Cross multiply
    326,929.50x = 490,422.42 × 90,272.22
  4. Step 4: Simplify right side
    326,929.50x = 44,271,520,591.17
  5. Step 5: Solve for x
    x = 44,271,520,591.17/326,929.50
  6. Step 6: Final answer
    x = 135,416.11

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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.