Home / 208,913.31-313,432.47-82,571.40

Finding the Fourth Proportional to 208,913.31, 313,432.47 and 82,571.40

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Solution

The fourth proportional to 208,913.31, 313,432.47 and 82,571.40 is: 123,881.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,913.31 : 313,432.47 = 82,571.40 : x
  2. Step 2: Convert to fraction form
    208,913.31/313,432.47 = 82,571.40/x
  3. Step 3: Cross multiply
    208,913.31x = 313,432.47 × 82,571.40
  4. Step 4: Simplify right side
    208,913.31x = 25,880,557,853.36
  5. Step 5: Solve for x
    x = 25,880,557,853.36/208,913.31
  6. Step 6: Final answer
    x = 123,881.80

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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.