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Finding the Fourth Proportional to 403,319.13, 605,015.15 and 119,009.13

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Solution

The fourth proportional to 403,319.13, 605,015.15 and 119,009.13 is: 178,524.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,319.13 : 605,015.15 = 119,009.13 : x
  2. Step 2: Convert to fraction form
    403,319.13/605,015.15 = 119,009.13/x
  3. Step 3: Cross multiply
    403,319.13x = 605,015.15 × 119,009.13
  4. Step 4: Simplify right side
    403,319.13x = 72,002,326,043.27
  5. Step 5: Solve for x
    x = 72,002,326,043.27/403,319.13
  6. Step 6: Final answer
    x = 178,524.45

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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.