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Finding the Fourth Proportional to 203,245.80, 280,467.84 and 112,594.56

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Solution

The fourth proportional to 203,245.80, 280,467.84 and 112,594.56 is: 155,374.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,245.80 : 280,467.84 = 112,594.56 : x
  2. Step 2: Convert to fraction form
    203,245.80/280,467.84 = 112,594.56/x
  3. Step 3: Cross multiply
    203,245.80x = 280,467.84 × 112,594.56
  4. Step 4: Simplify right side
    203,245.80x = 31,579,153,038.95
  5. Step 5: Solve for x
    x = 31,579,153,038.95/203,245.80
  6. Step 6: Final answer
    x = 155,374.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.