Home / 309,867.87-427,626.15-173,910.24

Finding the Fourth Proportional to 309,867.87, 427,626.15 and 173,910.24

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Solution

The fourth proportional to 309,867.87, 427,626.15 and 173,910.24 is: 240,000.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,867.87 : 427,626.15 = 173,910.24 : x
  2. Step 2: Convert to fraction form
    309,867.87/427,626.15 = 173,910.24/x
  3. Step 3: Cross multiply
    309,867.87x = 427,626.15 × 173,910.24
  4. Step 4: Simplify right side
    309,867.87x = 74,368,565,724.61
  5. Step 5: Solve for x
    x = 74,368,565,724.61/309,867.87
  6. Step 6: Final answer
    x = 240,000.89

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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.