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Finding the Fourth Proportional to 613,290.60, 919,871.18 and 164,056.80

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Solution

The fourth proportional to 613,290.60, 919,871.18 and 164,056.80 is: 246,067.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,290.60 : 919,871.18 = 164,056.80 : x
  2. Step 2: Convert to fraction form
    613,290.60/919,871.18 = 164,056.80/x
  3. Step 3: Cross multiply
    613,290.60x = 919,871.18 × 164,056.80
  4. Step 4: Simplify right side
    613,290.60x = 150,911,122,203.02
  5. Step 5: Solve for x
    x = 150,911,122,203.02/613,290.60
  6. Step 6: Final answer
    x = 246,067.89

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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.