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Finding the Fourth Proportional to 203,340.73, 280,612.20 and 112,698.70

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Solution

The fourth proportional to 203,340.73, 280,612.20 and 112,698.70 is: 155,525.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,340.73 : 280,612.20 = 112,698.70 : x
  2. Step 2: Convert to fraction form
    203,340.73/280,612.20 = 112,698.70/x
  3. Step 3: Cross multiply
    203,340.73x = 280,612.20 × 112,698.70
  4. Step 4: Simplify right side
    203,340.73x = 31,624,630,144.14
  5. Step 5: Solve for x
    x = 31,624,630,144.14/203,340.73
  6. Step 6: Final answer
    x = 155,525.31

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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.