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Finding the Fourth Proportional to 326,004.60, 488,350.80 and 219,716.40

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Solution

The fourth proportional to 326,004.60, 488,350.80 and 219,716.40 is: 329,132.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,004.60 : 488,350.80 = 219,716.40 : x
  2. Step 2: Convert to fraction form
    326,004.60/488,350.80 = 219,716.40/x
  3. Step 3: Cross multiply
    326,004.60x = 488,350.80 × 219,716.40
  4. Step 4: Simplify right side
    326,004.60x = 107,298,679,713.12
  5. Step 5: Solve for x
    x = 107,298,679,713.12/326,004.60
  6. Step 6: Final answer
    x = 329,132.41

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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.