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Finding the Fourth Proportional to 209,999.99, 315,015.78 and 60,239.09

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Solution

The fourth proportional to 209,999.99, 315,015.78 and 60,239.09 is: 90,363.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,999.99 : 315,015.78 = 60,239.09 : x
  2. Step 2: Convert to fraction form
    209,999.99/315,015.78 = 60,239.09/x
  3. Step 3: Cross multiply
    209,999.99x = 315,015.78 × 60,239.09
  4. Step 4: Simplify right side
    209,999.99x = 18,976,264,936.28
  5. Step 5: Solve for x
    x = 18,976,264,936.28/209,999.99
  6. Step 6: Final answer
    x = 90,363.17

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1.5x scale

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.