Home / 209,540.61-314,359.52-76,415.49

Finding the Fourth Proportional to 209,540.61, 314,359.52 and 76,415.49

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Solution

The fourth proportional to 209,540.61, 314,359.52 and 76,415.49 is: 114,640.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,540.61 : 314,359.52 = 76,415.49 : x
  2. Step 2: Convert to fraction form
    209,540.61/314,359.52 = 76,415.49/x
  3. Step 3: Cross multiply
    209,540.61x = 314,359.52 × 76,415.49
  4. Step 4: Simplify right side
    209,540.61x = 24,021,936,374.89
  5. Step 5: Solve for x
    x = 24,021,936,374.89/209,540.61
  6. Step 6: Final answer
    x = 114,640.96

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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.