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Finding the Fourth Proportional to 217,140.45, 299,629.63 and 126,477.45

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Solution

The fourth proportional to 217,140.45, 299,629.63 and 126,477.45 is: 174,524.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,140.45 : 299,629.63 = 126,477.45 : x
  2. Step 2: Convert to fraction form
    217,140.45/299,629.63 = 126,477.45/x
  3. Step 3: Cross multiply
    217,140.45x = 299,629.63 × 126,477.45
  4. Step 4: Simplify right side
    217,140.45x = 37,896,391,704.94
  5. Step 5: Solve for x
    x = 37,896,391,704.94/217,140.45
  6. Step 6: Final answer
    x = 174,524.79

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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.