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Finding the Fourth Proportional to 335,654.64, 503,483.28 and 135,978.88

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Solution

The fourth proportional to 335,654.64, 503,483.28 and 135,978.88 is: 203,968.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,654.64 : 503,483.28 = 135,978.88 : x
  2. Step 2: Convert to fraction form
    335,654.64/503,483.28 = 135,978.88/x
  3. Step 3: Cross multiply
    335,654.64x = 503,483.28 × 135,978.88
  4. Step 4: Simplify right side
    335,654.64x = 68,463,092,513.13
  5. Step 5: Solve for x
    x = 68,463,092,513.13/335,654.64
  6. Step 6: Final answer
    x = 203,968.85

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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.