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Finding the Fourth Proportional to 279,246.40, 418,869.60 and 161,148.40

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Solution

The fourth proportional to 279,246.40, 418,869.60 and 161,148.40 is: 241,722.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,246.40 : 418,869.60 = 161,148.40 : x
  2. Step 2: Convert to fraction form
    279,246.40/418,869.60 = 161,148.40/x
  3. Step 3: Cross multiply
    279,246.40x = 418,869.60 × 161,148.40
  4. Step 4: Simplify right side
    279,246.40x = 67,500,165,848.64
  5. Step 5: Solve for x
    x = 67,500,165,848.64/279,246.40
  6. Step 6: Final answer
    x = 241,722.60

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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.