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Finding the Fourth Proportional to 279,965.58, 420,122.58 and 113,753.58

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Solution

The fourth proportional to 279,965.58, 420,122.58 and 113,753.58 is: 170,701.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,965.58 : 420,122.58 = 113,753.58 : x
  2. Step 2: Convert to fraction form
    279,965.58/420,122.58 = 113,753.58/x
  3. Step 3: Cross multiply
    279,965.58x = 420,122.58 × 113,753.58
  4. Step 4: Simplify right side
    279,965.58x = 47,790,447,513.84
  5. Step 5: Solve for x
    x = 47,790,447,513.84/279,965.58
  6. Step 6: Final answer
    x = 170,701.15

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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.