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Finding the Fourth Proportional to 203,713.60, 306,031.20 and 141,505.60

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Solution

The fourth proportional to 203,713.60, 306,031.20 and 141,505.60 is: 212,578.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,713.60 : 306,031.20 = 141,505.60 : x
  2. Step 2: Convert to fraction form
    203,713.60/306,031.20 = 141,505.60/x
  3. Step 3: Cross multiply
    203,713.60x = 306,031.20 × 141,505.60
  4. Step 4: Simplify right side
    203,713.60x = 43,305,128,574.72
  5. Step 5: Solve for x
    x = 43,305,128,574.72/203,713.60
  6. Step 6: Final answer
    x = 212,578.49

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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.