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Finding the Fourth Proportional to 608,504.70, 912,670.65 and 209,163.90

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Solution

The fourth proportional to 608,504.70, 912,670.65 and 209,163.90 is: 313,716.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,504.70 : 912,670.65 = 209,163.90 : x
  2. Step 2: Convert to fraction form
    608,504.70/912,670.65 = 209,163.90/x
  3. Step 3: Cross multiply
    608,504.70x = 912,670.65 × 209,163.90
  4. Step 4: Simplify right side
    608,504.70x = 190,897,752,569.54
  5. Step 5: Solve for x
    x = 190,897,752,569.54/608,504.70
  6. Step 6: Final answer
    x = 313,716.15

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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.