Home / 409,151.28-613,823.52-128,668.56

Finding the Fourth Proportional to 409,151.28, 613,823.52 and 128,668.56

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Solution

The fourth proportional to 409,151.28, 613,823.52 and 128,668.56 is: 193,033.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,151.28 : 613,823.52 = 128,668.56 : x
  2. Step 2: Convert to fraction form
    409,151.28/613,823.52 = 128,668.56/x
  3. Step 3: Cross multiply
    409,151.28x = 613,823.52 × 128,668.56
  4. Step 4: Simplify right side
    409,151.28x = 78,979,788,412.53
  5. Step 5: Solve for x
    x = 78,979,788,412.53/409,151.28
  6. Step 6: Final answer
    x = 193,033.22

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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.