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Finding the Fourth Proportional to 331,294.76, 457,066.64 and 187,971.76

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Solution

The fourth proportional to 331,294.76, 457,066.64 and 187,971.76 is: 259,332.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,294.76 : 457,066.64 = 187,971.76 : x
  2. Step 2: Convert to fraction form
    331,294.76/457,066.64 = 187,971.76/x
  3. Step 3: Cross multiply
    331,294.76x = 457,066.64 × 187,971.76
  4. Step 4: Simplify right side
    331,294.76x = 85,915,620,758.09
  5. Step 5: Solve for x
    x = 85,915,620,758.09/331,294.76
  6. Step 6: Final answer
    x = 259,332.87

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1.5x scale

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.