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Finding the Fourth Proportional to 639,214.88, 959,250.36 and 265,238.24

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Solution

The fourth proportional to 639,214.88, 959,250.36 and 265,238.24 is: 398,034.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,214.88 : 959,250.36 = 265,238.24 : x
  2. Step 2: Convert to fraction form
    639,214.88/959,250.36 = 265,238.24/x
  3. Step 3: Cross multiply
    639,214.88x = 959,250.36 × 265,238.24
  4. Step 4: Simplify right side
    639,214.88x = 254,429,877,205.77
  5. Step 5: Solve for x
    x = 254,429,877,205.77/639,214.88
  6. Step 6: Final answer
    x = 398,034.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.