Home / 381,433.02-571,921.02-128,707.89

Finding the Fourth Proportional to 381,433.02, 571,921.02 and 128,707.89

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Solution

The fourth proportional to 381,433.02, 571,921.02 and 128,707.89 is: 192,984.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,433.02 : 571,921.02 = 128,707.89 : x
  2. Step 2: Convert to fraction form
    381,433.02/571,921.02 = 128,707.89/x
  3. Step 3: Cross multiply
    381,433.02x = 571,921.02 × 128,707.89
  4. Step 4: Simplify right side
    381,433.02x = 73,610,747,730.85
  5. Step 5: Solve for x
    x = 73,610,747,730.85/381,433.02
  6. Step 6: Final answer
    x = 192,984.73

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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.