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Finding the Fourth Proportional to 508,736.27, 702,064.28 and 279,314.70

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Solution

The fourth proportional to 508,736.27, 702,064.28 and 279,314.70 is: 385,458.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,736.27 : 702,064.28 = 279,314.70 : x
  2. Step 2: Convert to fraction form
    508,736.27/702,064.28 = 279,314.70/x
  3. Step 3: Cross multiply
    508,736.27x = 702,064.28 × 279,314.70
  4. Step 4: Simplify right side
    508,736.27x = 196,096,874,447.20
  5. Step 5: Solve for x
    x = 196,096,874,447.20/508,736.27
  6. Step 6: Final answer
    x = 385,458.81

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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.