Home / 381,263.47-571,496.13-128,456.62

Finding the Fourth Proportional to 381,263.47, 571,496.13 and 128,456.62

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Solution

The fourth proportional to 381,263.47, 571,496.13 and 128,456.62 is: 192,550.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,263.47 : 571,496.13 = 128,456.62 : x
  2. Step 2: Convert to fraction form
    381,263.47/571,496.13 = 128,456.62/x
  3. Step 3: Cross multiply
    381,263.47x = 571,496.13 × 128,456.62
  4. Step 4: Simplify right side
    381,263.47x = 73,412,461,202.88
  5. Step 5: Solve for x
    x = 73,412,461,202.88/381,263.47
  6. Step 6: Final answer
    x = 192,550.47

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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.