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Finding the Fourth Proportional to 888,168.90, 1,332,269.82 and 289,128

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Solution

The fourth proportional to 888,168.90, 1,332,269.82 and 289,128 is: 433,697.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,168.90 : 1,332,269.82 = 289,128 : x
  2. Step 2: Convert to fraction form
    888,168.90/1,332,269.82 = 289,128/x
  3. Step 3: Cross multiply
    888,168.90x = 1,332,269.82 × 289,128
  4. Step 4: Simplify right side
    888,168.90x = 385,196,508,516.96
  5. Step 5: Solve for x
    x = 385,196,508,516.96/888,168.90
  6. Step 6: Final answer
    x = 433,697.36

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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.