Home / 345,325.38-518,018.39-105,493.39

Finding the Fourth Proportional to 345,325.38, 518,018.39 and 105,493.39

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Solution

The fourth proportional to 345,325.38, 518,018.39 and 105,493.39 is: 158,249.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,325.38 : 518,018.39 = 105,493.39 : x
  2. Step 2: Convert to fraction form
    345,325.38/518,018.39 = 105,493.39/x
  3. Step 3: Cross multiply
    345,325.38x = 518,018.39 × 105,493.39
  4. Step 4: Simplify right side
    345,325.38x = 54,647,514,616.53
  5. Step 5: Solve for x
    x = 54,647,514,616.53/345,325.38
  6. Step 6: Final answer
    x = 158,249.35

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1.5x scale

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.