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Finding the Fourth Proportional to 331,494.98, 457,343.12 and 216,839.02

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Solution

The fourth proportional to 331,494.98, 457,343.12 and 216,839.02 is: 299,159.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,494.98 : 457,343.12 = 216,839.02 : x
  2. Step 2: Convert to fraction form
    331,494.98/457,343.12 = 216,839.02/x
  3. Step 3: Cross multiply
    331,494.98x = 457,343.12 × 216,839.02
  4. Step 4: Simplify right side
    331,494.98x = 99,169,833,944.54
  5. Step 5: Solve for x
    x = 99,169,833,944.54/331,494.98
  6. Step 6: Final answer
    x = 299,159.38

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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.