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Finding the Fourth Proportional to 289,900.20, 434,850.30 and 195,421.80

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Solution

The fourth proportional to 289,900.20, 434,850.30 and 195,421.80 is: 293,132.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,900.20 : 434,850.30 = 195,421.80 : x
  2. Step 2: Convert to fraction form
    289,900.20/434,850.30 = 195,421.80/x
  3. Step 3: Cross multiply
    289,900.20x = 434,850.30 × 195,421.80
  4. Step 4: Simplify right side
    289,900.20x = 84,979,228,356.54
  5. Step 5: Solve for x
    x = 84,979,228,356.54/289,900.20
  6. Step 6: Final answer
    x = 293,132.70

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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.