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Finding the Fourth Proportional to 501,399.75, 691,931.79 and 275,045.25

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Solution

The fourth proportional to 501,399.75, 691,931.79 and 275,045.25 is: 379,562.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,399.75 : 691,931.79 = 275,045.25 : x
  2. Step 2: Convert to fraction form
    501,399.75/691,931.79 = 275,045.25/x
  3. Step 3: Cross multiply
    501,399.75x = 691,931.79 × 275,045.25
  4. Step 4: Simplify right side
    501,399.75x = 190,312,552,163.50
  5. Step 5: Solve for x
    x = 190,312,552,163.50/501,399.75
  6. Step 6: Final answer
    x = 379,562.52

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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.