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Finding the Fourth Proportional to 245,281.20, 367,921.80 and 203,809.20

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Solution

The fourth proportional to 245,281.20, 367,921.80 and 203,809.20 is: 305,713.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,281.20 : 367,921.80 = 203,809.20 : x
  2. Step 2: Convert to fraction form
    245,281.20/367,921.80 = 203,809.20/x
  3. Step 3: Cross multiply
    245,281.20x = 367,921.80 × 203,809.20
  4. Step 4: Simplify right side
    245,281.20x = 74,985,847,720.56
  5. Step 5: Solve for x
    x = 74,985,847,720.56/245,281.20
  6. Step 6: Final answer
    x = 305,713.80

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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.