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Finding the Fourth Proportional to 203,607.42, 280,968.72 and 112,962.42

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Solution

The fourth proportional to 203,607.42, 280,968.72 and 112,962.42 is: 155,882.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,607.42 : 280,968.72 = 112,962.42 : x
  2. Step 2: Convert to fraction form
    203,607.42/280,968.72 = 112,962.42/x
  3. Step 3: Cross multiply
    203,607.42x = 280,968.72 × 112,962.42
  4. Step 4: Simplify right side
    203,607.42x = 31,738,906,555.50
  5. Step 5: Solve for x
    x = 31,738,906,555.50/203,607.42
  6. Step 6: Final answer
    x = 155,882.86

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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.