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Finding the Fourth Proportional to 404,261.60, 606,392.40 and 123,742.40

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Solution

The fourth proportional to 404,261.60, 606,392.40 and 123,742.40 is: 185,613.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,261.60 : 606,392.40 = 123,742.40 : x
  2. Step 2: Convert to fraction form
    404,261.60/606,392.40 = 123,742.40/x
  3. Step 3: Cross multiply
    404,261.60x = 606,392.40 × 123,742.40
  4. Step 4: Simplify right side
    404,261.60x = 75,036,450,917.76
  5. Step 5: Solve for x
    x = 75,036,450,917.76/404,261.60
  6. Step 6: Final answer
    x = 185,613.60

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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.