Home / 203,219.42-280,439.12-112,575.10

Finding the Fourth Proportional to 203,219.42, 280,439.12 and 112,575.10

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Solution

The fourth proportional to 203,219.42, 280,439.12 and 112,575.10 is: 155,351.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,219.42 : 280,439.12 = 112,575.10 : x
  2. Step 2: Convert to fraction form
    203,219.42/280,439.12 = 112,575.10/x
  3. Step 3: Cross multiply
    203,219.42x = 280,439.12 × 112,575.10
  4. Step 4: Simplify right side
    203,219.42x = 31,570,461,977.91
  5. Step 5: Solve for x
    x = 31,570,461,977.91/203,219.42
  6. Step 6: Final answer
    x = 155,351.60

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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.