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Finding the Fourth Proportional to 297,232.29, 445,916.48 and 128,780.64

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Solution

The fourth proportional to 297,232.29, 445,916.48 and 128,780.64 is: 193,200.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,232.29 : 445,916.48 = 128,780.64 : x
  2. Step 2: Convert to fraction form
    297,232.29/445,916.48 = 128,780.64/x
  3. Step 3: Cross multiply
    297,232.29x = 445,916.48 × 128,780.64
  4. Step 4: Simplify right side
    297,232.29x = 57,425,409,037.04
  5. Step 5: Solve for x
    x = 57,425,409,037.04/297,232.29
  6. Step 6: Final answer
    x = 193,200.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.