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Finding the Fourth Proportional to 278,293.17, 384,045.32 and 150,968.78

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Solution

The fourth proportional to 278,293.17, 384,045.32 and 150,968.78 is: 208,337.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,293.17 : 384,045.32 = 150,968.78 : x
  2. Step 2: Convert to fraction form
    278,293.17/384,045.32 = 150,968.78/x
  3. Step 3: Cross multiply
    278,293.17x = 384,045.32 × 150,968.78
  4. Step 4: Simplify right side
    278,293.17x = 57,978,850,750.04
  5. Step 5: Solve for x
    x = 57,978,850,750.04/278,293.17
  6. Step 6: Final answer
    x = 208,337.31

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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.