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Finding the Fourth Proportional to 203,149.66, 280,347.30 and 112,503.64

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Solution

The fourth proportional to 203,149.66, 280,347.30 and 112,503.64 is: 155,255.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,149.66 : 280,347.30 = 112,503.64 : x
  2. Step 2: Convert to fraction form
    203,149.66/280,347.30 = 112,503.64/x
  3. Step 3: Cross multiply
    203,149.66x = 280,347.30 × 112,503.64
  4. Step 4: Simplify right side
    203,149.66x = 31,540,091,714.17
  5. Step 5: Solve for x
    x = 31,540,091,714.17/203,149.66
  6. Step 6: Final answer
    x = 155,255.45

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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.