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Finding the Fourth Proportional to 208,800.99, 313,048.13 and 66,564.45

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Solution

The fourth proportional to 208,800.99, 313,048.13 and 66,564.45 is: 99,797.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,800.99 : 313,048.13 = 66,564.45 : x
  2. Step 2: Convert to fraction form
    208,800.99/313,048.13 = 66,564.45/x
  3. Step 3: Cross multiply
    208,800.99x = 313,048.13 × 66,564.45
  4. Step 4: Simplify right side
    208,800.99x = 20,837,876,264.16
  5. Step 5: Solve for x
    x = 20,837,876,264.16/208,800.99
  6. Step 6: Final answer
    x = 99,797.78

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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.