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Finding the Fourth Proportional to 351,975.95, 485,256.92 and 279,618.92

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Solution

The fourth proportional to 351,975.95, 485,256.92 and 279,618.92 is: 385,500.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,975.95 : 485,256.92 = 279,618.92 : x
  2. Step 2: Convert to fraction form
    351,975.95/485,256.92 = 279,618.92/x
  3. Step 3: Cross multiply
    351,975.95x = 485,256.92 × 279,618.92
  4. Step 4: Simplify right side
    351,975.95x = 135,687,015,892.93
  5. Step 5: Solve for x
    x = 135,687,015,892.93/351,975.95
  6. Step 6: Final answer
    x = 385,500.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.