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Finding the Fourth Proportional to 209,999.39, 314,997.71 and 125,783.48

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Solution

The fourth proportional to 209,999.39, 314,997.71 and 125,783.48 is: 188,674.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,999.39 : 314,997.71 = 125,783.48 : x
  2. Step 2: Convert to fraction form
    209,999.39/314,997.71 = 125,783.48/x
  3. Step 3: Cross multiply
    209,999.39x = 314,997.71 × 125,783.48
  4. Step 4: Simplify right side
    209,999.39x = 39,621,509,021.94
  5. Step 5: Solve for x
    x = 39,621,509,021.94/209,999.39
  6. Step 6: Final answer
    x = 188,674.41

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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.