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Finding the Fourth Proportional to 203,416.20, 305,124.30 and 55,672.20

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Solution

The fourth proportional to 203,416.20, 305,124.30 and 55,672.20 is: 83,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,416.20 : 305,124.30 = 55,672.20 : x
  2. Step 2: Convert to fraction form
    203,416.20/305,124.30 = 55,672.20/x
  3. Step 3: Cross multiply
    203,416.20x = 305,124.30 × 55,672.20
  4. Step 4: Simplify right side
    203,416.20x = 16,986,941,054.46
  5. Step 5: Solve for x
    x = 16,986,941,054.46/203,416.20
  6. Step 6: Final answer
    x = 83,508.30

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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.