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Finding the Fourth Proportional to 482,352.72, 665,636.34 and 278,387.64

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Solution

The fourth proportional to 482,352.72, 665,636.34 and 278,387.64 is: 384,168.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,352.72 : 665,636.34 = 278,387.64 : x
  2. Step 2: Convert to fraction form
    482,352.72/665,636.34 = 278,387.64/x
  3. Step 3: Cross multiply
    482,352.72x = 665,636.34 × 278,387.64
  4. Step 4: Simplify right side
    482,352.72x = 185,304,929,790.84
  5. Step 5: Solve for x
    x = 185,304,929,790.84/482,352.72
  6. Step 6: Final answer
    x = 384,168.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.