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Finding the Fourth Proportional to 376,588.50, 519,738.21 and 217,612.50

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Solution

The fourth proportional to 376,588.50, 519,738.21 and 217,612.50 is: 300,331.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,588.50 : 519,738.21 = 217,612.50 : x
  2. Step 2: Convert to fraction form
    376,588.50/519,738.21 = 217,612.50/x
  3. Step 3: Cross multiply
    376,588.50x = 519,738.21 × 217,612.50
  4. Step 4: Simplify right side
    376,588.50x = 113,101,531,223.63
  5. Step 5: Solve for x
    x = 113,101,531,223.63/376,588.50
  6. Step 6: Final answer
    x = 300,331.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.