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Finding the Fourth Proportional to 180,818.40, 270,968.40 and 133,060.80

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Solution

The fourth proportional to 180,818.40, 270,968.40 and 133,060.80 is: 199,400.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,818.40 : 270,968.40 = 133,060.80 : x
  2. Step 2: Convert to fraction form
    180,818.40/270,968.40 = 133,060.80/x
  3. Step 3: Cross multiply
    180,818.40x = 270,968.40 × 133,060.80
  4. Step 4: Simplify right side
    180,818.40x = 36,055,272,078.72
  5. Step 5: Solve for x
    x = 36,055,272,078.72/180,818.40
  6. Step 6: Final answer
    x = 199,400.46

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1.5x scale

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.