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Finding the Fourth Proportional to 203,440.89, 280,745.15 and 111,559.89

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Solution

The fourth proportional to 203,440.89, 280,745.15 and 111,559.89 is: 153,950.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,440.89 : 280,745.15 = 111,559.89 : x
  2. Step 2: Convert to fraction form
    203,440.89/280,745.15 = 111,559.89/x
  3. Step 3: Cross multiply
    203,440.89x = 280,745.15 × 111,559.89
  4. Step 4: Simplify right side
    203,440.89x = 31,319,897,494.23
  5. Step 5: Solve for x
    x = 31,319,897,494.23/203,440.89
  6. Step 6: Final answer
    x = 153,950.85

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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.