Home / 315,202,971.20-472,166,727.60-218,268,132.80

Finding the Fourth Proportional to 315,202,971.20, 472,166,727.60 and 218,268,132.80

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Solution

The fourth proportional to 315,202,971.20, 472,166,727.60 and 218,268,132.80 is: 326,960,591.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,202,971.20 : 472,166,727.60 = 218,268,132.80 : x
  2. Step 2: Convert to fraction form
    315,202,971.20/472,166,727.60 = 218,268,132.80/x
  3. Step 3: Cross multiply
    315,202,971.20x = 472,166,727.60 × 218,268,132.80
  4. Step 4: Simplify right side
    315,202,971.20x = 103,058,950,003,538,240
  5. Step 5: Solve for x
    x = 103,058,950,003,538,240/315,202,971.20
  6. Step 6: Final answer
    x = 326,960,591.81

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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.