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Finding the Fourth Proportional to 438,100.40, 657,174.51 and 138,558.62

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Solution

The fourth proportional to 438,100.40, 657,174.51 and 138,558.62 is: 207,845.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,100.40 : 657,174.51 = 138,558.62 : x
  2. Step 2: Convert to fraction form
    438,100.40/657,174.51 = 138,558.62/x
  3. Step 3: Cross multiply
    438,100.40x = 657,174.51 × 138,558.62
  4. Step 4: Simplify right side
    438,100.40x = 91,057,189,918.90
  5. Step 5: Solve for x
    x = 91,057,189,918.90/438,100.40
  6. Step 6: Final answer
    x = 207,845.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.