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Finding the Fourth Proportional to 203,215.01, 280,436.67 and 112,576.86

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Solution

The fourth proportional to 203,215.01, 280,436.67 and 112,576.86 is: 155,356.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,215.01 : 280,436.67 = 112,576.86 : x
  2. Step 2: Convert to fraction form
    203,215.01/280,436.67 = 112,576.86/x
  3. Step 3: Cross multiply
    203,215.01x = 280,436.67 × 112,576.86
  4. Step 4: Simplify right side
    203,215.01x = 31,570,679,737.46
  5. Step 5: Solve for x
    x = 31,570,679,737.46/203,215.01
  6. Step 6: Final answer
    x = 155,356.05

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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.