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Finding the Fourth Proportional to 395,082.66, 545,223.36 and 225,313.14

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Solution

The fourth proportional to 395,082.66, 545,223.36 and 225,313.14 is: 310,937.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,082.66 : 545,223.36 = 225,313.14 : x
  2. Step 2: Convert to fraction form
    395,082.66/545,223.36 = 225,313.14/x
  3. Step 3: Cross multiply
    395,082.66x = 545,223.36 × 225,313.14
  4. Step 4: Simplify right side
    395,082.66x = 122,845,987,242.95
  5. Step 5: Solve for x
    x = 122,845,987,242.95/395,082.66
  6. Step 6: Final answer
    x = 310,937.43

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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.