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Finding the Fourth Proportional to 289,069.70, 433,021.35 and 200,423.30

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Solution

The fourth proportional to 289,069.70, 433,021.35 and 200,423.30 is: 300,230.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,069.70 : 433,021.35 = 200,423.30 : x
  2. Step 2: Convert to fraction form
    289,069.70/433,021.35 = 200,423.30/x
  3. Step 3: Cross multiply
    289,069.70x = 433,021.35 × 200,423.30
  4. Step 4: Simplify right side
    289,069.70x = 86,787,567,937.46
  5. Step 5: Solve for x
    x = 86,787,567,937.46/289,069.70
  6. Step 6: Final answer
    x = 300,230.59

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1.5x scale

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.