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Finding the Fourth Proportional to 418,806.48, 628,199.92 and 134,496.48

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Solution

The fourth proportional to 418,806.48, 628,199.92 and 134,496.48 is: 201,741.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,806.48 : 628,199.92 = 134,496.48 : x
  2. Step 2: Convert to fraction form
    418,806.48/628,199.92 = 134,496.48/x
  3. Step 3: Cross multiply
    418,806.48x = 628,199.92 × 134,496.48
  4. Step 4: Simplify right side
    418,806.48x = 84,490,677,976.28
  5. Step 5: Solve for x
    x = 84,490,677,976.28/418,806.48
  6. Step 6: Final answer
    x = 201,741.57

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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.