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Finding the Fourth Proportional to 203,311.95, 280,571.13 and 112,669.38

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Solution

The fourth proportional to 203,311.95, 280,571.13 and 112,669.38 is: 155,484.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,311.95 : 280,571.13 = 112,669.38 : x
  2. Step 2: Convert to fraction form
    203,311.95/280,571.13 = 112,669.38/x
  3. Step 3: Cross multiply
    203,311.95x = 280,571.13 × 112,669.38
  4. Step 4: Simplify right side
    203,311.95x = 31,611,775,263.00
  5. Step 5: Solve for x
    x = 31,611,775,263.00/203,311.95
  6. Step 6: Final answer
    x = 155,484.10

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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.