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Finding the Fourth Proportional to 203,330.61, 280,595.88 and 111,449.84

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Solution

The fourth proportional to 203,330.61, 280,595.88 and 111,449.84 is: 153,800.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,330.61 : 280,595.88 = 111,449.84 : x
  2. Step 2: Convert to fraction form
    203,330.61/280,595.88 = 111,449.84/x
  3. Step 3: Cross multiply
    203,330.61x = 280,595.88 × 111,449.84
  4. Step 4: Simplify right side
    203,330.61x = 31,272,364,527.68
  5. Step 5: Solve for x
    x = 31,272,364,527.68/203,330.61
  6. Step 6: Final answer
    x = 153,800.57

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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.