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Finding the Fourth Proportional to 326,937.60, 490,406.40 and 169,214.40

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Solution

The fourth proportional to 326,937.60, 490,406.40 and 169,214.40 is: 253,821.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,937.60 : 490,406.40 = 169,214.40 : x
  2. Step 2: Convert to fraction form
    326,937.60/490,406.40 = 169,214.40/x
  3. Step 3: Cross multiply
    326,937.60x = 490,406.40 × 169,214.40
  4. Step 4: Simplify right side
    326,937.60x = 82,983,824,732.16
  5. Step 5: Solve for x
    x = 82,983,824,732.16/326,937.60
  6. Step 6: Final answer
    x = 253,821.60

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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.