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Finding the Fourth Proportional to 418,905.44, 628,416.48 and 134,604.48

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Solution

The fourth proportional to 418,905.44, 628,416.48 and 134,604.48 is: 201,925.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,905.44 : 628,416.48 = 134,604.48 : x
  2. Step 2: Convert to fraction form
    418,905.44/628,416.48 = 134,604.48/x
  3. Step 3: Cross multiply
    418,905.44x = 628,416.48 × 134,604.48
  4. Step 4: Simplify right side
    418,905.44x = 84,587,673,513.83
  5. Step 5: Solve for x
    x = 84,587,673,513.83/418,905.44
  6. Step 6: Final answer
    x = 201,925.46

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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.