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Finding the Fourth Proportional to 326,793.90, 490,093.65 and 126,999.30

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Solution

The fourth proportional to 326,793.90, 490,093.65 and 126,999.30 is: 190,461.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,793.90 : 490,093.65 = 126,999.30 : x
  2. Step 2: Convert to fraction form
    326,793.90/490,093.65 = 126,999.30/x
  3. Step 3: Cross multiply
    326,793.90x = 490,093.65 × 126,999.30
  4. Step 4: Simplify right side
    326,793.90x = 62,241,550,484.45
  5. Step 5: Solve for x
    x = 62,241,550,484.45/326,793.90
  6. Step 6: Final answer
    x = 190,461.18

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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.