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Finding the Fourth Proportional to 345,234.36, 517,916.88 and 134,859

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Solution

The fourth proportional to 345,234.36, 517,916.88 and 134,859 is: 202,314.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,234.36 : 517,916.88 = 134,859 : x
  2. Step 2: Convert to fraction form
    345,234.36/517,916.88 = 134,859/x
  3. Step 3: Cross multiply
    345,234.36x = 517,916.88 × 134,859
  4. Step 4: Simplify right side
    345,234.36x = 69,845,752,519.92
  5. Step 5: Solve for x
    x = 69,845,752,519.92/345,234.36
  6. Step 6: Final answer
    x = 202,314.02

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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.