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Finding the Fourth Proportional to 203,310.34, 280,555.56 and 112,661.01

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Solution

The fourth proportional to 203,310.34, 280,555.56 and 112,661.01 is: 155,465.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,310.34 : 280,555.56 = 112,661.01 : x
  2. Step 2: Convert to fraction form
    203,310.34/280,555.56 = 112,661.01/x
  3. Step 3: Cross multiply
    203,310.34x = 280,555.56 × 112,661.01
  4. Step 4: Simplify right side
    203,310.34x = 31,607,672,750.72
  5. Step 5: Solve for x
    x = 31,607,672,750.72/203,310.34
  6. Step 6: Final answer
    x = 155,465.15

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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.