Home / 371,082.18-512,077.70-209,939.96

Finding the Fourth Proportional to 371,082.18, 512,077.70 and 209,939.96

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Solution

The fourth proportional to 371,082.18, 512,077.70 and 209,939.96 is: 289,708.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,082.18 : 512,077.70 = 209,939.96 : x
  2. Step 2: Convert to fraction form
    371,082.18/512,077.70 = 209,939.96/x
  3. Step 3: Cross multiply
    371,082.18x = 512,077.70 × 209,939.96
  4. Step 4: Simplify right side
    371,082.18x = 107,505,571,854.89
  5. Step 5: Solve for x
    x = 107,505,571,854.89/371,082.18
  6. Step 6: Final answer
    x = 289,708.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.