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Finding the Fourth Proportional to 209,370.84, 288,836.46 and 124,439.64

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Solution

The fourth proportional to 209,370.84, 288,836.46 and 124,439.64 is: 171,670.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,370.84 : 288,836.46 = 124,439.64 : x
  2. Step 2: Convert to fraction form
    209,370.84/288,836.46 = 124,439.64/x
  3. Step 3: Cross multiply
    209,370.84x = 288,836.46 × 124,439.64
  4. Step 4: Simplify right side
    209,370.84x = 35,942,705,101.27
  5. Step 5: Solve for x
    x = 35,942,705,101.27/209,370.84
  6. Step 6: Final answer
    x = 171,670.06

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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.