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Finding the Fourth Proportional to 326,830.48, 490,273.98 and 90,173.14

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Solution

The fourth proportional to 326,830.48, 490,273.98 and 90,173.14 is: 135,267.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,830.48 : 490,273.98 = 90,173.14 : x
  2. Step 2: Convert to fraction form
    326,830.48/490,273.98 = 90,173.14/x
  3. Step 3: Cross multiply
    326,830.48x = 490,273.98 × 90,173.14
  4. Step 4: Simplify right side
    326,830.48x = 44,209,544,236.90
  5. Step 5: Solve for x
    x = 44,209,544,236.90/326,830.48
  6. Step 6: Final answer
    x = 135,267.51

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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.