Home / 203,428.05-280,747.35-112,812.44

Finding the Fourth Proportional to 203,428.05, 280,747.35 and 112,812.44

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Solution

The fourth proportional to 203,428.05, 280,747.35 and 112,812.44 is: 155,690.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,428.05 : 280,747.35 = 112,812.44 : x
  2. Step 2: Convert to fraction form
    203,428.05/280,747.35 = 112,812.44/x
  3. Step 3: Cross multiply
    203,428.05x = 280,747.35 × 112,812.44
  4. Step 4: Simplify right side
    203,428.05x = 31,671,792,173.30
  5. Step 5: Solve for x
    x = 31,671,792,173.30/203,428.05
  6. Step 6: Final answer
    x = 155,690.39

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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.