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Finding the Fourth Proportional to 203,358.60, 305,124.30 and 98,123.40

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Solution

The fourth proportional to 203,358.60, 305,124.30 and 98,123.40 is: 147,226.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,358.60 : 305,124.30 = 98,123.40 : x
  2. Step 2: Convert to fraction form
    203,358.60/305,124.30 = 98,123.40/x
  3. Step 3: Cross multiply
    203,358.60x = 305,124.30 × 98,123.40
  4. Step 4: Simplify right side
    203,358.60x = 29,939,833,738.62
  5. Step 5: Solve for x
    x = 29,939,833,738.62/203,358.60
  6. Step 6: Final answer
    x = 147,226.79

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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.