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Finding the Fourth Proportional to 351,455.69, 485,044.65 and 253,419.57

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Solution

The fourth proportional to 351,455.69, 485,044.65 and 253,419.57 is: 349,744.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,455.69 : 485,044.65 = 253,419.57 : x
  2. Step 2: Convert to fraction form
    351,455.69/485,044.65 = 253,419.57/x
  3. Step 3: Cross multiply
    351,455.69x = 485,044.65 × 253,419.57
  4. Step 4: Simplify right side
    351,455.69x = 122,919,806,633.80
  5. Step 5: Solve for x
    x = 122,919,806,633.80/351,455.69
  6. Step 6: Final answer
    x = 349,744.82

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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.