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Finding the Fourth Proportional to 454,383.20, 681,607.20 and 138,839.60

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Solution

The fourth proportional to 454,383.20, 681,607.20 and 138,839.60 is: 208,269.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,383.20 : 681,607.20 = 138,839.60 : x
  2. Step 2: Convert to fraction form
    454,383.20/681,607.20 = 138,839.60/x
  3. Step 3: Cross multiply
    454,383.20x = 681,607.20 × 138,839.60
  4. Step 4: Simplify right side
    454,383.20x = 94,634,071,005.12
  5. Step 5: Solve for x
    x = 94,634,071,005.12/454,383.20
  6. Step 6: Final answer
    x = 208,269.30

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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.