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Finding the Fourth Proportional to 340,062.80, 510,072.60 and 115,422.80

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Solution

The fourth proportional to 340,062.80, 510,072.60 and 115,422.80 is: 173,126.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,062.80 : 510,072.60 = 115,422.80 : x
  2. Step 2: Convert to fraction form
    340,062.80/510,072.60 = 115,422.80/x
  3. Step 3: Cross multiply
    340,062.80x = 510,072.60 × 115,422.80
  4. Step 4: Simplify right side
    340,062.80x = 58,874,007,695.28
  5. Step 5: Solve for x
    x = 58,874,007,695.28/340,062.80
  6. Step 6: Final answer
    x = 173,126.87

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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.