Home / 309,235.40-426,738.66-173,267.72

Finding the Fourth Proportional to 309,235.40, 426,738.66 and 173,267.72

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Solution

The fourth proportional to 309,235.40, 426,738.66 and 173,267.72 is: 239,105.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,235.40 : 426,738.66 = 173,267.72 : x
  2. Step 2: Convert to fraction form
    309,235.40/426,738.66 = 173,267.72/x
  3. Step 3: Cross multiply
    309,235.40x = 426,738.66 × 173,267.72
  4. Step 4: Simplify right side
    309,235.40x = 73,940,034,654.06
  5. Step 5: Solve for x
    x = 73,940,034,654.06/309,235.40
  6. Step 6: Final answer
    x = 239,105.98

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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.