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Finding the Fourth Proportional to 279,419.61, 385,607.58 and 197,893.92

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Solution

The fourth proportional to 279,419.61, 385,607.58 and 197,893.92 is: 273,099.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,419.61 : 385,607.58 = 197,893.92 : x
  2. Step 2: Convert to fraction form
    279,419.61/385,607.58 = 197,893.92/x
  3. Step 3: Cross multiply
    279,419.61x = 385,607.58 × 197,893.92
  4. Step 4: Simplify right side
    279,419.61x = 76,309,395,587.91
  5. Step 5: Solve for x
    x = 76,309,395,587.91/279,419.61
  6. Step 6: Final answer
    x = 273,099.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.