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Finding the Fourth Proportional to 339,747.74, 509,621.73 and 99,861.70

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Solution

The fourth proportional to 339,747.74, 509,621.73 and 99,861.70 is: 149,792.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,747.74 : 509,621.73 = 99,861.70 : x
  2. Step 2: Convert to fraction form
    339,747.74/509,621.73 = 99,861.70/x
  3. Step 3: Cross multiply
    339,747.74x = 509,621.73 × 99,861.70
  4. Step 4: Simplify right side
    339,747.74x = 50,891,689,267.32
  5. Step 5: Solve for x
    x = 50,891,689,267.32/339,747.74
  6. Step 6: Final answer
    x = 149,792.58

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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.