Home / 398,721.70-598,082.55-188,769.70

Finding the Fourth Proportional to 398,721.70, 598,082.55 and 188,769.70

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Solution

The fourth proportional to 398,721.70, 598,082.55 and 188,769.70 is: 283,154.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,721.70 : 598,082.55 = 188,769.70 : x
  2. Step 2: Convert to fraction form
    398,721.70/598,082.55 = 188,769.70/x
  3. Step 3: Cross multiply
    398,721.70x = 598,082.55 × 188,769.70
  4. Step 4: Simplify right side
    398,721.70x = 112,899,863,538.74
  5. Step 5: Solve for x
    x = 112,899,863,538.74/398,721.70
  6. Step 6: Final answer
    x = 283,154.55

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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.