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Finding the Fourth Proportional to 203,341.27, 280,603.30 and 112,698.78

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Solution

The fourth proportional to 203,341.27, 280,603.30 and 112,698.78 is: 155,520.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,341.27 : 280,603.30 = 112,698.78 : x
  2. Step 2: Convert to fraction form
    203,341.27/280,603.30 = 112,698.78/x
  3. Step 3: Cross multiply
    203,341.27x = 280,603.30 × 112,698.78
  4. Step 4: Simplify right side
    203,341.27x = 31,623,649,573.97
  5. Step 5: Solve for x
    x = 31,623,649,573.97/203,341.27
  6. Step 6: Final answer
    x = 155,520.08

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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.