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Finding the Fourth Proportional to 323,799.95, 485,405.90 and 113,323.07

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Solution

The fourth proportional to 323,799.95, 485,405.90 and 113,323.07 is: 169,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,799.95 : 485,405.90 = 113,323.07 : x
  2. Step 2: Convert to fraction form
    323,799.95/485,405.90 = 113,323.07/x
  3. Step 3: Cross multiply
    323,799.95x = 485,405.90 × 113,323.07
  4. Step 4: Simplify right side
    323,799.95x = 55,007,687,855.97
  5. Step 5: Solve for x
    x = 55,007,687,855.97/323,799.95
  6. Step 6: Final answer
    x = 169,881.70

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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.