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Finding the Fourth Proportional to 425,367.64, 638,273.94 and 275,569.48

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Solution

The fourth proportional to 425,367.64, 638,273.94 and 275,569.48 is: 413,498.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,367.64 : 638,273.94 = 275,569.48 : x
  2. Step 2: Convert to fraction form
    425,367.64/638,273.94 = 275,569.48/x
  3. Step 3: Cross multiply
    425,367.64x = 638,273.94 × 275,569.48
  4. Step 4: Simplify right side
    425,367.64x = 175,888,817,743.35
  5. Step 5: Solve for x
    x = 175,888,817,743.35/425,367.64
  6. Step 6: Final answer
    x = 413,498.35

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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.