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Finding the Fourth Proportional to 392,610.23, 589,208.45 and 291,641.43

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Solution

The fourth proportional to 392,610.23, 589,208.45 and 291,641.43 is: 437,679.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,610.23 : 589,208.45 = 291,641.43 : x
  2. Step 2: Convert to fraction form
    392,610.23/589,208.45 = 291,641.43/x
  3. Step 3: Cross multiply
    392,610.23x = 589,208.45 × 291,641.43
  4. Step 4: Simplify right side
    392,610.23x = 171,837,593,467.88
  5. Step 5: Solve for x
    x = 171,837,593,467.88/392,610.23
  6. Step 6: Final answer
    x = 437,679.87

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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.