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Finding the Fourth Proportional to 199,599.30, 299,435.40 and 81,282.60

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Solution

The fourth proportional to 199,599.30, 299,435.40 and 81,282.60 is: 121,938.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,599.30 : 299,435.40 = 81,282.60 : x
  2. Step 2: Convert to fraction form
    199,599.30/299,435.40 = 81,282.60/x
  3. Step 3: Cross multiply
    199,599.30x = 299,435.40 × 81,282.60
  4. Step 4: Simplify right side
    199,599.30x = 24,338,887,844.04
  5. Step 5: Solve for x
    x = 24,338,887,844.04/199,599.30
  6. Step 6: Final answer
    x = 121,938.74

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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.