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Finding the Fourth Proportional to 406,667, 561,066.02 and 245,460.84

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Solution

The fourth proportional to 406,667, 561,066.02 and 245,460.84 is: 338,654.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,667 : 561,066.02 = 245,460.84 : x
  2. Step 2: Convert to fraction form
    406,667/561,066.02 = 245,460.84/x
  3. Step 3: Cross multiply
    406,667x = 561,066.02 × 245,460.84
  4. Step 4: Simplify right side
    406,667x = 137,719,736,564.66
  5. Step 5: Solve for x
    x = 137,719,736,564.66/406,667
  6. Step 6: Final answer
    x = 338,654.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.