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Finding the Fourth Proportional to 421,503.89, 632,333.82 and 133,388.08

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Solution

The fourth proportional to 421,503.89, 632,333.82 and 133,388.08 is: 200,106.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,503.89 : 632,333.82 = 133,388.08 : x
  2. Step 2: Convert to fraction form
    421,503.89/632,333.82 = 133,388.08/x
  3. Step 3: Cross multiply
    421,503.89x = 632,333.82 × 133,388.08
  4. Step 4: Simplify right side
    421,503.89x = 84,345,796,645.11
  5. Step 5: Solve for x
    x = 84,345,796,645.11/421,503.89
  6. Step 6: Final answer
    x = 200,106.81

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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.