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Finding the Fourth Proportional to 609,402.17, 913,543.48 and 209,947.97

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Solution

The fourth proportional to 609,402.17, 913,543.48 and 209,947.97 is: 314,729.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,402.17 : 913,543.48 = 209,947.97 : x
  2. Step 2: Convert to fraction form
    609,402.17/913,543.48 = 209,947.97/x
  3. Step 3: Cross multiply
    609,402.17x = 913,543.48 × 209,947.97
  4. Step 4: Simplify right side
    609,402.17x = 191,796,601,679.03
  5. Step 5: Solve for x
    x = 191,796,601,679.03/609,402.17
  6. Step 6: Final answer
    x = 314,729.11

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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.