Home / 381,011.22-571,116.70-128,203.94

Finding the Fourth Proportional to 381,011.22, 571,116.70 and 128,203.94

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Solution

The fourth proportional to 381,011.22, 571,116.70 and 128,203.94 is: 192,171.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,011.22 : 571,116.70 = 128,203.94 : x
  2. Step 2: Convert to fraction form
    381,011.22/571,116.70 = 128,203.94/x
  3. Step 3: Cross multiply
    381,011.22x = 571,116.70 × 128,203.94
  4. Step 4: Simplify right side
    381,011.22x = 73,219,411,139.80
  5. Step 5: Solve for x
    x = 73,219,411,139.80/381,011.22
  6. Step 6: Final answer
    x = 192,171.27

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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.