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Finding the Fourth Proportional to 425,296.62, 638,009.46 and 144,748.26

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Solution

The fourth proportional to 425,296.62, 638,009.46 and 144,748.26 is: 217,144.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,296.62 : 638,009.46 = 144,748.26 : x
  2. Step 2: Convert to fraction form
    425,296.62/638,009.46 = 144,748.26/x
  3. Step 3: Cross multiply
    425,296.62x = 638,009.46 × 144,748.26
  4. Step 4: Simplify right side
    425,296.62x = 92,350,759,198.54
  5. Step 5: Solve for x
    x = 92,350,759,198.54/425,296.62
  6. Step 6: Final answer
    x = 217,144.35

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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.