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Finding the Fourth Proportional to 203,332.64, 280,599.75 and 112,690.13

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Solution

The fourth proportional to 203,332.64, 280,599.75 and 112,690.13 is: 155,512.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,332.64 : 280,599.75 = 112,690.13 : x
  2. Step 2: Convert to fraction form
    203,332.64/280,599.75 = 112,690.13/x
  3. Step 3: Cross multiply
    203,332.64x = 280,599.75 × 112,690.13
  4. Step 4: Simplify right side
    203,332.64x = 31,620,820,902.47
  5. Step 5: Solve for x
    x = 31,620,820,902.47/203,332.64
  6. Step 6: Final answer
    x = 155,512.77

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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.