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Finding the Fourth Proportional to 245,428.30, 367,624.05 and 203,956.30

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Solution

The fourth proportional to 245,428.30, 367,624.05 and 203,956.30 is: 305,503.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,428.30 : 367,624.05 = 203,956.30 : x
  2. Step 2: Convert to fraction form
    245,428.30/367,624.05 = 203,956.30/x
  3. Step 3: Cross multiply
    245,428.30x = 367,624.05 × 203,956.30
  4. Step 4: Simplify right side
    245,428.30x = 74,979,241,029.02
  5. Step 5: Solve for x
    x = 74,979,241,029.02/245,428.30
  6. Step 6: Final answer
    x = 305,503.65

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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.