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Finding the Fourth Proportional to 372,721.80, 559,082.70 and 254,623.80

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Solution

The fourth proportional to 372,721.80, 559,082.70 and 254,623.80 is: 381,935.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,721.80 : 559,082.70 = 254,623.80 : x
  2. Step 2: Convert to fraction form
    372,721.80/559,082.70 = 254,623.80/x
  3. Step 3: Cross multiply
    372,721.80x = 559,082.70 × 254,623.80
  4. Step 4: Simplify right side
    372,721.80x = 142,355,761,588.26
  5. Step 5: Solve for x
    x = 142,355,761,588.26/372,721.80
  6. Step 6: Final answer
    x = 381,935.70

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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.