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Finding the Fourth Proportional to 279,147.53, 418,713.40 and 89,606.42

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Solution

The fourth proportional to 279,147.53, 418,713.40 and 89,606.42 is: 134,407.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,147.53 : 418,713.40 = 89,606.42 : x
  2. Step 2: Convert to fraction form
    279,147.53/418,713.40 = 89,606.42/x
  3. Step 3: Cross multiply
    279,147.53x = 418,713.40 × 89,606.42
  4. Step 4: Simplify right side
    279,147.53x = 37,519,408,368.64
  5. Step 5: Solve for x
    x = 37,519,408,368.64/279,147.53
  6. Step 6: Final answer
    x = 134,407.09

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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.