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Finding the Fourth Proportional to 203,388.56, 280,657.50 and 112,740.14

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Solution

The fourth proportional to 203,388.56, 280,657.50 and 112,740.14 is: 155,571.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,388.56 : 280,657.50 = 112,740.14 : x
  2. Step 2: Convert to fraction form
    203,388.56/280,657.50 = 112,740.14/x
  3. Step 3: Cross multiply
    203,388.56x = 280,657.50 × 112,740.14
  4. Step 4: Simplify right side
    203,388.56x = 31,641,364,438.76
  5. Step 5: Solve for x
    x = 31,641,364,438.76/203,388.56
  6. Step 6: Final answer
    x = 155,571.02

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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.