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Finding the Fourth Proportional to 393,497.28, 590,100.48 and 140,709.60

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Solution

The fourth proportional to 393,497.28, 590,100.48 and 140,709.60 is: 211,012.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,497.28 : 590,100.48 = 140,709.60 : x
  2. Step 2: Convert to fraction form
    393,497.28/590,100.48 = 140,709.60/x
  3. Step 3: Cross multiply
    393,497.28x = 590,100.48 × 140,709.60
  4. Step 4: Simplify right side
    393,497.28x = 83,032,802,500.61
  5. Step 5: Solve for x
    x = 83,032,802,500.61/393,497.28
  6. Step 6: Final answer
    x = 211,012.39

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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.