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Finding the Fourth Proportional to 422,356.20, 633,540.78 and 141,875.88

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Solution

The fourth proportional to 422,356.20, 633,540.78 and 141,875.88 is: 212,816.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,356.20 : 633,540.78 = 141,875.88 : x
  2. Step 2: Convert to fraction form
    422,356.20/633,540.78 = 141,875.88/x
  3. Step 3: Cross multiply
    422,356.20x = 633,540.78 × 141,875.88
  4. Step 4: Simplify right side
    422,356.20x = 89,884,155,678.39
  5. Step 5: Solve for x
    x = 89,884,155,678.39/422,356.20
  6. Step 6: Final answer
    x = 212,816.00

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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.