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Finding the Fourth Proportional to 326,999.40, 490,515.30 and 169,535.40

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Solution

The fourth proportional to 326,999.40, 490,515.30 and 169,535.40 is: 254,311.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,999.40 : 490,515.30 = 169,535.40 : x
  2. Step 2: Convert to fraction form
    326,999.40/490,515.30 = 169,535.40/x
  3. Step 3: Cross multiply
    326,999.40x = 490,515.30 × 169,535.40
  4. Step 4: Simplify right side
    326,999.40x = 83,159,707,591.62
  5. Step 5: Solve for x
    x = 83,159,707,591.62/326,999.40
  6. Step 6: Final answer
    x = 254,311.50

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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.