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Finding the Fourth Proportional to 205,774.41, 308,673.50 and 79,415.31

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Solution

The fourth proportional to 205,774.41, 308,673.50 and 79,415.31 is: 119,127.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,774.41 : 308,673.50 = 79,415.31 : x
  2. Step 2: Convert to fraction form
    205,774.41/308,673.50 = 79,415.31/x
  3. Step 3: Cross multiply
    205,774.41x = 308,673.50 × 79,415.31
  4. Step 4: Simplify right side
    205,774.41x = 24,513,401,691.29
  5. Step 5: Solve for x
    x = 24,513,401,691.29/205,774.41
  6. Step 6: Final answer
    x = 119,127.55

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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.