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Finding the Fourth Proportional to 235,503.24, 324,991.40 and 128,070.97

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Solution

The fourth proportional to 235,503.24, 324,991.40 and 128,070.97 is: 176,736.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,503.24 : 324,991.40 = 128,070.97 : x
  2. Step 2: Convert to fraction form
    235,503.24/324,991.40 = 128,070.97/x
  3. Step 3: Cross multiply
    235,503.24x = 324,991.40 × 128,070.97
  4. Step 4: Simplify right side
    235,503.24x = 41,621,963,839.66
  5. Step 5: Solve for x
    x = 41,621,963,839.66/235,503.24
  6. Step 6: Final answer
    x = 176,736.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.