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Finding the Fourth Proportional to 418,803.96, 628,196.04 and 134,495.16

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Solution

The fourth proportional to 418,803.96, 628,196.04 and 134,495.16 is: 201,739.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,803.96 : 628,196.04 = 134,495.16 : x
  2. Step 2: Convert to fraction form
    418,803.96/628,196.04 = 134,495.16/x
  3. Step 3: Cross multiply
    418,803.96x = 628,196.04 × 134,495.16
  4. Step 4: Simplify right side
    418,803.96x = 84,489,326,911.17
  5. Step 5: Solve for x
    x = 84,489,326,911.17/418,803.96
  6. Step 6: Final answer
    x = 201,739.56

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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.