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Finding the Fourth Proportional to 339,388.20, 509,082.30 and 260,898.60

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Solution

The fourth proportional to 339,388.20, 509,082.30 and 260,898.60 is: 391,347.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,388.20 : 509,082.30 = 260,898.60 : x
  2. Step 2: Convert to fraction form
    339,388.20/509,082.30 = 260,898.60/x
  3. Step 3: Cross multiply
    339,388.20x = 509,082.30 × 260,898.60
  4. Step 4: Simplify right side
    339,388.20x = 132,818,859,354.78
  5. Step 5: Solve for x
    x = 132,818,859,354.78/339,388.20
  6. Step 6: Final answer
    x = 391,347.90

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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.