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Finding the Fourth Proportional to 403,372.41, 605,053.15 and 137,318.39

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Solution

The fourth proportional to 403,372.41, 605,053.15 and 137,318.39 is: 205,975.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,372.41 : 605,053.15 = 137,318.39 : x
  2. Step 2: Convert to fraction form
    403,372.41/605,053.15 = 137,318.39/x
  3. Step 3: Cross multiply
    403,372.41x = 605,053.15 × 137,318.39
  4. Step 4: Simplify right side
    403,372.41x = 83,084,925,591.77
  5. Step 5: Solve for x
    x = 83,084,925,591.77/403,372.41
  6. Step 6: Final answer
    x = 205,975.73

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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.