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Finding the Fourth Proportional to 203,397.39, 280,690.94 and 117,374.23

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Solution

The fourth proportional to 203,397.39, 280,690.94 and 117,374.23 is: 161,977.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,397.39 : 280,690.94 = 117,374.23 : x
  2. Step 2: Convert to fraction form
    203,397.39/280,690.94 = 117,374.23/x
  3. Step 3: Cross multiply
    203,397.39x = 280,690.94 × 117,374.23
  4. Step 4: Simplify right side
    203,397.39x = 32,945,880,960.15
  5. Step 5: Solve for x
    x = 32,945,880,960.15/203,397.39
  6. Step 6: Final answer
    x = 161,977.89

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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.