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Finding the Fourth Proportional to 340,651.32, 510,974.40 and 87,910.32

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Solution

The fourth proportional to 340,651.32, 510,974.40 and 87,910.32 is: 131,864.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,651.32 : 510,974.40 = 87,910.32 : x
  2. Step 2: Convert to fraction form
    340,651.32/510,974.40 = 87,910.32/x
  3. Step 3: Cross multiply
    340,651.32x = 510,974.40 × 87,910.32
  4. Step 4: Simplify right side
    340,651.32x = 44,919,923,015.81
  5. Step 5: Solve for x
    x = 44,919,923,015.81/340,651.32
  6. Step 6: Final answer
    x = 131,864.81

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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.