Home / 381,189.02-571,664.22-137,999.40

Finding the Fourth Proportional to 381,189.02, 571,664.22 and 137,999.40

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Solution

The fourth proportional to 381,189.02, 571,664.22 and 137,999.40 is: 206,955.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,189.02 : 571,664.22 = 137,999.40 : x
  2. Step 2: Convert to fraction form
    381,189.02/571,664.22 = 137,999.40/x
  3. Step 3: Cross multiply
    381,189.02x = 571,664.22 × 137,999.40
  4. Step 4: Simplify right side
    381,189.02x = 78,889,319,361.47
  5. Step 5: Solve for x
    x = 78,889,319,361.47/381,189.02
  6. Step 6: Final answer
    x = 206,955.91

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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.