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Finding the Fourth Proportional to 639,035.70, 958,389.21 and 189,650.22

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Solution

The fourth proportional to 639,035.70, 958,389.21 and 189,650.22 is: 284,426.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,035.70 : 958,389.21 = 189,650.22 : x
  2. Step 2: Convert to fraction form
    639,035.70/958,389.21 = 189,650.22/x
  3. Step 3: Cross multiply
    639,035.70x = 958,389.21 × 189,650.22
  4. Step 4: Simplify right side
    639,035.70x = 181,758,724,522.13
  5. Step 5: Solve for x
    x = 181,758,724,522.13/639,035.70
  6. Step 6: Final answer
    x = 284,426.56

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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.