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Finding the Fourth Proportional to 203,345.52, 280,549.58 and 122,742.42

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Solution

The fourth proportional to 203,345.52, 280,549.58 and 122,742.42 is: 169,343.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,345.52 : 280,549.58 = 122,742.42 : x
  2. Step 2: Convert to fraction form
    203,345.52/280,549.58 = 122,742.42/x
  3. Step 3: Cross multiply
    203,345.52x = 280,549.58 × 122,742.42
  4. Step 4: Simplify right side
    203,345.52x = 34,435,334,379.18
  5. Step 5: Solve for x
    x = 34,435,334,379.18/203,345.52
  6. Step 6: Final answer
    x = 169,343.95

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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.