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Finding the Fourth Proportional to 368,396.64, 508,115.22 and 253,711.74

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Solution

The fourth proportional to 368,396.64, 508,115.22 and 253,711.74 is: 349,934.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,396.64 : 508,115.22 = 253,711.74 : x
  2. Step 2: Convert to fraction form
    368,396.64/508,115.22 = 253,711.74/x
  3. Step 3: Cross multiply
    368,396.64x = 508,115.22 × 253,711.74
  4. Step 4: Simplify right side
    368,396.64x = 128,914,796,586.68
  5. Step 5: Solve for x
    x = 128,914,796,586.68/368,396.64
  6. Step 6: Final answer
    x = 349,934.78

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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.