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Finding the Fourth Proportional to 389,576.64, 584,452.44 and 123,316.68

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Solution

The fourth proportional to 389,576.64, 584,452.44 and 123,316.68 is: 185,002.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,576.64 : 584,452.44 = 123,316.68 : x
  2. Step 2: Convert to fraction form
    389,576.64/584,452.44 = 123,316.68/x
  3. Step 3: Cross multiply
    389,576.64x = 584,452.44 × 123,316.68
  4. Step 4: Simplify right side
    389,576.64x = 72,072,734,518.70
  5. Step 5: Solve for x
    x = 72,072,734,518.70/389,576.64
  6. Step 6: Final answer
    x = 185,002.71

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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.