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Finding the Fourth Proportional to 245,812.20, 339,253.16 and 138,403.16

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Solution

The fourth proportional to 245,812.20, 339,253.16 and 138,403.16 is: 191,014.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,812.20 : 339,253.16 = 138,403.16 : x
  2. Step 2: Convert to fraction form
    245,812.20/339,253.16 = 138,403.16/x
  3. Step 3: Cross multiply
    245,812.20x = 339,253.16 × 138,403.16
  4. Step 4: Simplify right side
    245,812.20x = 46,953,709,383.99
  5. Step 5: Solve for x
    x = 46,953,709,383.99/245,812.20
  6. Step 6: Final answer
    x = 191,014.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.