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Finding the Fourth Proportional to 326,881.63, 490,350.75 and 90,224.38

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Solution

The fourth proportional to 326,881.63, 490,350.75 and 90,224.38 is: 135,344.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,881.63 : 490,350.75 = 90,224.38 : x
  2. Step 2: Convert to fraction form
    326,881.63/490,350.75 = 90,224.38/x
  3. Step 3: Cross multiply
    326,881.63x = 490,350.75 × 90,224.38
  4. Step 4: Simplify right side
    326,881.63x = 44,241,592,401.29
  5. Step 5: Solve for x
    x = 44,241,592,401.29/326,881.63
  6. Step 6: Final answer
    x = 135,344.38

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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.