Home / 327,128.70-490,691.43-87,242.07

Finding the Fourth Proportional to 327,128.70, 490,691.43 and 87,242.07

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Solution

The fourth proportional to 327,128.70, 490,691.43 and 87,242.07 is: 130,862.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,128.70 : 490,691.43 = 87,242.07 : x
  2. Step 2: Convert to fraction form
    327,128.70/490,691.43 = 87,242.07/x
  3. Step 3: Cross multiply
    327,128.70x = 490,691.43 × 87,242.07
  4. Step 4: Simplify right side
    327,128.70x = 42,808,936,084.46
  5. Step 5: Solve for x
    x = 42,808,936,084.46/327,128.70
  6. Step 6: Final answer
    x = 130,862.67

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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.