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Finding the Fourth Proportional to 351,455.64, 485,044.59 and 253,419.53

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Solution

The fourth proportional to 351,455.64, 485,044.59 and 253,419.53 is: 349,744.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,455.64 : 485,044.59 = 253,419.53 : x
  2. Step 2: Convert to fraction form
    351,455.64/485,044.59 = 253,419.53/x
  3. Step 3: Cross multiply
    351,455.64x = 485,044.59 × 253,419.53
  4. Step 4: Simplify right side
    351,455.64x = 122,919,769,601.62
  5. Step 5: Solve for x
    x = 122,919,769,601.62/351,455.64
  6. Step 6: Final answer
    x = 349,744.76

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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.