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Finding the Fourth Proportional to 326,999.60, 490,812.60 and 169,341.20

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Solution

The fourth proportional to 326,999.60, 490,812.60 and 169,341.20 is: 254,173.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,999.60 : 490,812.60 = 169,341.20 : x
  2. Step 2: Convert to fraction form
    326,999.60/490,812.60 = 169,341.20/x
  3. Step 3: Cross multiply
    326,999.60x = 490,812.60 × 169,341.20
  4. Step 4: Simplify right side
    326,999.60x = 83,114,794,659.12
  5. Step 5: Solve for x
    x = 83,114,794,659.12/326,999.60
  6. Step 6: Final answer
    x = 254,173.99

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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.