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Finding the Fourth Proportional to 407,795.40, 611,537.10 and 134,177.88

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Solution

The fourth proportional to 407,795.40, 611,537.10 and 134,177.88 is: 201,215.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,795.40 : 611,537.10 = 134,177.88 : x
  2. Step 2: Convert to fraction form
    407,795.40/611,537.10 = 134,177.88/x
  3. Step 3: Cross multiply
    407,795.40x = 611,537.10 × 134,177.88
  4. Step 4: Simplify right side
    407,795.40x = 82,054,751,619.35
  5. Step 5: Solve for x
    x = 82,054,751,619.35/407,795.40
  6. Step 6: Final answer
    x = 201,215.49

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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.