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Finding the Fourth Proportional to 347,789.70, 521,684.55 and 254,477.70

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Solution

The fourth proportional to 347,789.70, 521,684.55 and 254,477.70 is: 381,716.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,789.70 : 521,684.55 = 254,477.70 : x
  2. Step 2: Convert to fraction form
    347,789.70/521,684.55 = 254,477.70/x
  3. Step 3: Cross multiply
    347,789.70x = 521,684.55 × 254,477.70
  4. Step 4: Simplify right side
    347,789.70x = 132,757,084,409.54
  5. Step 5: Solve for x
    x = 132,757,084,409.54/347,789.70
  6. Step 6: Final answer
    x = 381,716.55

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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.