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Finding the Fourth Proportional to 561,850.50, 775,353.96 and 307,203.78

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Solution

The fourth proportional to 561,850.50, 775,353.96 and 307,203.78 is: 423,941.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,850.50 : 775,353.96 = 307,203.78 : x
  2. Step 2: Convert to fraction form
    561,850.50/775,353.96 = 307,203.78/x
  3. Step 3: Cross multiply
    561,850.50x = 775,353.96 × 307,203.78
  4. Step 4: Simplify right side
    561,850.50x = 238,191,667,349.97
  5. Step 5: Solve for x
    x = 238,191,667,349.97/561,850.50
  6. Step 6: Final answer
    x = 423,941.36

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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.