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Finding the Fourth Proportional to 340,611.60, 510,917.40 and 87,891.60

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Solution

The fourth proportional to 340,611.60, 510,917.40 and 87,891.60 is: 131,837.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,611.60 : 510,917.40 = 87,891.60 : x
  2. Step 2: Convert to fraction form
    340,611.60/510,917.40 = 87,891.60/x
  3. Step 3: Cross multiply
    340,611.60x = 510,917.40 × 87,891.60
  4. Step 4: Simplify right side
    340,611.60x = 44,905,347,753.84
  5. Step 5: Solve for x
    x = 44,905,347,753.84/340,611.60
  6. Step 6: Final answer
    x = 131,837.40

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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.