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Finding the Fourth Proportional to 639,214.56, 958,572.60 and 239,637.54

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Solution

The fourth proportional to 639,214.56, 958,572.60 and 239,637.54 is: 359,362.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,214.56 : 958,572.60 = 239,637.54 : x
  2. Step 2: Convert to fraction form
    639,214.56/958,572.60 = 239,637.54/x
  3. Step 3: Cross multiply
    639,214.56x = 958,572.60 × 239,637.54
  4. Step 4: Simplify right side
    639,214.56x = 229,709,979,775.40
  5. Step 5: Solve for x
    x = 229,709,979,775.40/639,214.56
  6. Step 6: Final answer
    x = 359,362.87

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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.