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Finding the Fourth Proportional to 339,870.74, 468,989.39 and 186,906.29

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Solution

The fourth proportional to 339,870.74, 468,989.39 and 186,906.29 is: 257,912.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,870.74 : 468,989.39 = 186,906.29 : x
  2. Step 2: Convert to fraction form
    339,870.74/468,989.39 = 186,906.29/x
  3. Step 3: Cross multiply
    339,870.74x = 468,989.39 × 186,906.29
  4. Step 4: Simplify right side
    339,870.74x = 87,657,065,056.58
  5. Step 5: Solve for x
    x = 87,657,065,056.58/339,870.74
  6. Step 6: Final answer
    x = 257,912.95

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Why These Related Problems?

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