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Finding the Fourth Proportional to 260,516.52, 390,715.65 and 73,542.60

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Solution

The fourth proportional to 260,516.52, 390,715.65 and 73,542.60 is: 110,297.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,516.52 : 390,715.65 = 73,542.60 : x
  2. Step 2: Convert to fraction form
    260,516.52/390,715.65 = 73,542.60/x
  3. Step 3: Cross multiply
    260,516.52x = 390,715.65 × 73,542.60
  4. Step 4: Simplify right side
    260,516.52x = 28,734,244,761.69
  5. Step 5: Solve for x
    x = 28,734,244,761.69/260,516.52
  6. Step 6: Final answer
    x = 110,297.21

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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.