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Finding the Fourth Proportional to 508,561.11, 701,823.24 and 279,139.86

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Solution

The fourth proportional to 508,561.11, 701,823.24 and 279,139.86 is: 385,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,561.11 : 701,823.24 = 279,139.86 : x
  2. Step 2: Convert to fraction form
    508,561.11/701,823.24 = 279,139.86/x
  3. Step 3: Cross multiply
    508,561.11x = 701,823.24 × 279,139.86
  4. Step 4: Simplify right side
    508,561.11x = 195,906,840,958.35
  5. Step 5: Solve for x
    x = 195,906,840,958.35/508,561.11
  6. Step 6: Final answer
    x = 385,217.90

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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.