Home / 381,128.40-572,061.87-203,760.18

Finding the Fourth Proportional to 381,128.40, 572,061.87 and 203,760.18

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Solution

The fourth proportional to 381,128.40, 572,061.87 and 203,760.18 is: 305,837.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,128.40 : 572,061.87 = 203,760.18 : x
  2. Step 2: Convert to fraction form
    381,128.40/572,061.87 = 203,760.18/x
  3. Step 3: Cross multiply
    381,128.40x = 572,061.87 × 203,760.18
  4. Step 4: Simplify right side
    381,128.40x = 116,563,429,602.34
  5. Step 5: Solve for x
    x = 116,563,429,602.34/381,128.40
  6. Step 6: Final answer
    x = 305,837.69

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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.