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Finding the Fourth Proportional to 293,422.60, 440,279.70 and 115,935.40

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Solution

The fourth proportional to 293,422.60, 440,279.70 and 115,935.40 is: 173,960.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,422.60 : 440,279.70 = 115,935.40 : x
  2. Step 2: Convert to fraction form
    293,422.60/440,279.70 = 115,935.40/x
  3. Step 3: Cross multiply
    293,422.60x = 440,279.70 × 115,935.40
  4. Step 4: Simplify right side
    293,422.60x = 51,044,003,131.38
  5. Step 5: Solve for x
    x = 51,044,003,131.38/293,422.60
  6. Step 6: Final answer
    x = 173,960.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.