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Finding the Fourth Proportional to 373,235.72, 515,049.98 and 209,887.56

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Solution

The fourth proportional to 373,235.72, 515,049.98 and 209,887.56 is: 289,636.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,235.72 : 515,049.98 = 209,887.56 : x
  2. Step 2: Convert to fraction form
    373,235.72/515,049.98 = 209,887.56/x
  3. Step 3: Cross multiply
    373,235.72x = 515,049.98 × 209,887.56
  4. Step 4: Simplify right side
    373,235.72x = 108,102,582,530.81
  5. Step 5: Solve for x
    x = 108,102,582,530.81/373,235.72
  6. Step 6: Final answer
    x = 289,636.22

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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.