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Finding the Fourth Proportional to 203,230.48, 280,468.12 and 122,656.72

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Solution

The fourth proportional to 203,230.48, 280,468.12 and 122,656.72 is: 169,272.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,230.48 : 280,468.12 = 122,656.72 : x
  2. Step 2: Convert to fraction form
    203,230.48/280,468.12 = 122,656.72/x
  3. Step 3: Cross multiply
    203,230.48x = 280,468.12 × 122,656.72
  4. Step 4: Simplify right side
    203,230.48x = 34,401,299,663.77
  5. Step 5: Solve for x
    x = 34,401,299,663.77/203,230.48
  6. Step 6: Final answer
    x = 169,272.34

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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.