Home / 438,627.72-657,964.80-123,109.24

Finding the Fourth Proportional to 438,627.72, 657,964.80 and 123,109.24

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Solution

The fourth proportional to 438,627.72, 657,964.80 and 123,109.24 is: 184,670.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,627.72 : 657,964.80 = 123,109.24 : x
  2. Step 2: Convert to fraction form
    438,627.72/657,964.80 = 123,109.24/x
  3. Step 3: Cross multiply
    438,627.72x = 657,964.80 × 123,109.24
  4. Step 4: Simplify right side
    438,627.72x = 81,001,546,474.75
  5. Step 5: Solve for x
    x = 81,001,546,474.75/438,627.72
  6. Step 6: Final answer
    x = 184,670.38

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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.