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Finding the Fourth Proportional to 438,354.55, 657,538.31 and 122,791.51

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Solution

The fourth proportional to 438,354.55, 657,538.31 and 122,791.51 is: 184,189.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,354.55 : 657,538.31 = 122,791.51 : x
  2. Step 2: Convert to fraction form
    438,354.55/657,538.31 = 122,791.51/x
  3. Step 3: Cross multiply
    438,354.55x = 657,538.31 × 122,791.51
  4. Step 4: Simplify right side
    438,354.55x = 80,740,121,353.79
  5. Step 5: Solve for x
    x = 80,740,121,353.79/438,354.55
  6. Step 6: Final answer
    x = 184,189.08

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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.