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Finding the Fourth Proportional to 340,509.26, 510,793.26 and 87,787.60

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Solution

The fourth proportional to 340,509.26, 510,793.26 and 87,787.60 is: 131,688.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,509.26 : 510,793.26 = 87,787.60 : x
  2. Step 2: Convert to fraction form
    340,509.26/510,793.26 = 87,787.60/x
  3. Step 3: Cross multiply
    340,509.26x = 510,793.26 × 87,787.60
  4. Step 4: Simplify right side
    340,509.26x = 44,841,314,391.58
  5. Step 5: Solve for x
    x = 44,841,314,391.58/340,509.26
  6. Step 6: Final answer
    x = 131,688.97

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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.