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Finding the Fourth Proportional to 609,394.86, 913,532.42 and 209,940.66

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Solution

The fourth proportional to 609,394.86, 913,532.42 and 209,940.66 is: 314,718.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,394.86 : 913,532.42 = 209,940.66 : x
  2. Step 2: Convert to fraction form
    609,394.86/913,532.42 = 209,940.66/x
  3. Step 3: Cross multiply
    609,394.86x = 913,532.42 × 209,940.66
  4. Step 4: Simplify right side
    609,394.86x = 191,787,599,186.20
  5. Step 5: Solve for x
    x = 191,787,599,186.20/609,394.86
  6. Step 6: Final answer
    x = 314,718.11

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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.