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Finding the Fourth Proportional to 202,310.64, 279,188.64 and 112,886.64

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Solution

The fourth proportional to 202,310.64, 279,188.64 and 112,886.64 is: 155,783.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,310.64 : 279,188.64 = 112,886.64 : x
  2. Step 2: Convert to fraction form
    202,310.64/279,188.64 = 112,886.64/x
  3. Step 3: Cross multiply
    202,310.64x = 279,188.64 × 112,886.64
  4. Step 4: Simplify right side
    202,310.64x = 31,516,667,495.77
  5. Step 5: Solve for x
    x = 31,516,667,495.77/202,310.64
  6. Step 6: Final answer
    x = 155,783.54

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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.