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Finding the Fourth Proportional to 425,363.90, 638,109.26 and 151,788.80

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Solution

The fourth proportional to 425,363.90, 638,109.26 and 151,788.80 is: 227,705.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,363.90 : 638,109.26 = 151,788.80 : x
  2. Step 2: Convert to fraction form
    425,363.90/638,109.26 = 151,788.80/x
  3. Step 3: Cross multiply
    425,363.90x = 638,109.26 × 151,788.80
  4. Step 4: Simplify right side
    425,363.90x = 96,857,834,894.80
  5. Step 5: Solve for x
    x = 96,857,834,894.80/425,363.90
  6. Step 6: Final answer
    x = 227,705.82

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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.