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Finding the Fourth Proportional to 203,561.16, 280,900.44 and 112,913.52

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Solution

The fourth proportional to 203,561.16, 280,900.44 and 112,913.52 is: 155,812.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,561.16 : 280,900.44 = 112,913.52 : x
  2. Step 2: Convert to fraction form
    203,561.16/280,900.44 = 112,913.52/x
  3. Step 3: Cross multiply
    203,561.16x = 280,900.44 × 112,913.52
  4. Step 4: Simplify right side
    203,561.16x = 31,717,457,449.95
  5. Step 5: Solve for x
    x = 31,717,457,449.95/203,561.16
  6. Step 6: Final answer
    x = 155,812.91

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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.