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Finding the Fourth Proportional to 639,548.33, 959,155.43 and 190,148.18

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Solution

The fourth proportional to 639,548.33, 959,155.43 and 190,148.18 is: 285,172.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,548.33 : 959,155.43 = 190,148.18 : x
  2. Step 2: Convert to fraction form
    639,548.33/959,155.43 = 190,148.18/x
  3. Step 3: Cross multiply
    639,548.33x = 959,155.43 × 190,148.18
  4. Step 4: Simplify right side
    639,548.33x = 182,381,653,605.10
  5. Step 5: Solve for x
    x = 182,381,653,605.10/639,548.33
  6. Step 6: Final answer
    x = 285,172.59

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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.