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Finding the Fourth Proportional to 430,568.44, 645,801.90 and 115,049.68

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Solution

The fourth proportional to 430,568.44, 645,801.90 and 115,049.68 is: 172,560.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,568.44 : 645,801.90 = 115,049.68 : x
  2. Step 2: Convert to fraction form
    430,568.44/645,801.90 = 115,049.68/x
  3. Step 3: Cross multiply
    430,568.44x = 645,801.90 × 115,049.68
  4. Step 4: Simplify right side
    430,568.44x = 74,299,301,938.39
  5. Step 5: Solve for x
    x = 74,299,301,938.39/430,568.44
  6. Step 6: Final answer
    x = 172,560.96

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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.