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Finding the Fourth Proportional to 425,797.19, 639,799.88 and 320,176.37

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Solution

The fourth proportional to 425,797.19, 639,799.88 and 320,176.37 is: 481,094.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,797.19 : 639,799.88 = 320,176.37 : x
  2. Step 2: Convert to fraction form
    425,797.19/639,799.88 = 320,176.37/x
  3. Step 3: Cross multiply
    425,797.19x = 639,799.88 × 320,176.37
  4. Step 4: Simplify right side
    425,797.19x = 204,848,803,105.01
  5. Step 5: Solve for x
    x = 204,848,803,105.01/425,797.19
  6. Step 6: Final answer
    x = 481,094.77

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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.