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Finding the Fourth Proportional to 203,506.95, 280,856.84 and 112,892.11

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Solution

The fourth proportional to 203,506.95, 280,856.84 and 112,892.11 is: 155,800.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,506.95 : 280,856.84 = 112,892.11 : x
  2. Step 2: Convert to fraction form
    203,506.95/280,856.84 = 112,892.11/x
  3. Step 3: Cross multiply
    203,506.95x = 280,856.84 × 112,892.11
  4. Step 4: Simplify right side
    203,506.95x = 31,706,521,275.53
  5. Step 5: Solve for x
    x = 31,706,521,275.53/203,506.95
  6. Step 6: Final answer
    x = 155,800.68

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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.