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Finding the Fourth Proportional to 203,615.80, 306,079.80 and 144,858.40

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Solution

The fourth proportional to 203,615.80, 306,079.80 and 144,858.40 is: 217,754.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,615.80 : 306,079.80 = 144,858.40 : x
  2. Step 2: Convert to fraction form
    203,615.80/306,079.80 = 144,858.40/x
  3. Step 3: Cross multiply
    203,615.80x = 306,079.80 × 144,858.40
  4. Step 4: Simplify right side
    203,615.80x = 44,338,230,100.32
  5. Step 5: Solve for x
    x = 44,338,230,100.32/203,615.80
  6. Step 6: Final answer
    x = 217,754.37

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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.