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Finding the Fourth Proportional to 203,038.62, 280,189.18 and 112,394.64

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Solution

The fourth proportional to 203,038.62, 280,189.18 and 112,394.64 is: 155,102.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,038.62 : 280,189.18 = 112,394.64 : x
  2. Step 2: Convert to fraction form
    203,038.62/280,189.18 = 112,394.64/x
  3. Step 3: Cross multiply
    203,038.62x = 280,189.18 × 112,394.64
  4. Step 4: Simplify right side
    203,038.62x = 31,491,762,018.00
  5. Step 5: Solve for x
    x = 31,491,762,018.00/203,038.62
  6. Step 6: Final answer
    x = 155,102.32

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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.