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Finding the Fourth Proportional to 203,253.03, 280,499.63 and 122,679.45

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Solution

The fourth proportional to 203,253.03, 280,499.63 and 122,679.45 is: 169,303.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,253.03 : 280,499.63 = 122,679.45 : x
  2. Step 2: Convert to fraction form
    203,253.03/280,499.63 = 122,679.45/x
  3. Step 3: Cross multiply
    203,253.03x = 280,499.63 × 122,679.45
  4. Step 4: Simplify right side
    203,253.03x = 34,411,539,720.21
  5. Step 5: Solve for x
    x = 34,411,539,720.21/203,253.03
  6. Step 6: Final answer
    x = 169,303.94

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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.