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Finding the Fourth Proportional to 378,274.84, 522,232.86 and 251,124.28

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Solution

The fourth proportional to 378,274.84, 522,232.86 and 251,124.28 is: 346,693.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,274.84 : 522,232.86 = 251,124.28 : x
  2. Step 2: Convert to fraction form
    378,274.84/522,232.86 = 251,124.28/x
  3. Step 3: Cross multiply
    378,274.84x = 522,232.86 × 251,124.28
  4. Step 4: Simplify right side
    378,274.84x = 131,145,350,959.84
  5. Step 5: Solve for x
    x = 131,145,350,959.84/378,274.84
  6. Step 6: Final answer
    x = 346,693.30

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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.