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Finding the Fourth Proportional to 331,488.84, 457,403.40 and 186,265.92

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Solution

The fourth proportional to 331,488.84, 457,403.40 and 186,265.92 is: 257,018.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,488.84 : 457,403.40 = 186,265.92 : x
  2. Step 2: Convert to fraction form
    331,488.84/457,403.40 = 186,265.92/x
  3. Step 3: Cross multiply
    331,488.84x = 457,403.40 × 186,265.92
  4. Step 4: Simplify right side
    331,488.84x = 85,198,665,112.13
  5. Step 5: Solve for x
    x = 85,198,665,112.13/331,488.84
  6. Step 6: Final answer
    x = 257,018.20

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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.