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Finding the Fourth Proportional to 279,148.53, 418,714.90 and 89,607.42

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Solution

The fourth proportional to 279,148.53, 418,714.90 and 89,607.42 is: 134,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,148.53 : 418,714.90 = 89,607.42 : x
  2. Step 2: Convert to fraction form
    279,148.53/418,714.90 = 89,607.42/x
  3. Step 3: Cross multiply
    279,148.53x = 418,714.90 × 89,607.42
  4. Step 4: Simplify right side
    279,148.53x = 37,519,961,904.56
  5. Step 5: Solve for x
    x = 37,519,961,904.56/279,148.53
  6. Step 6: Final answer
    x = 134,408.60

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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.