Home / 430,819.76-646,180.40-115,301.27

Finding the Fourth Proportional to 430,819.76, 646,180.40 and 115,301.27

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Solution

The fourth proportional to 430,819.76, 646,180.40 and 115,301.27 is: 172,938.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,819.76 : 646,180.40 = 115,301.27 : x
  2. Step 2: Convert to fraction form
    430,819.76/646,180.40 = 115,301.27/x
  3. Step 3: Cross multiply
    430,819.76x = 646,180.40 × 115,301.27
  4. Step 4: Simplify right side
    430,819.76x = 74,505,422,672.81
  5. Step 5: Solve for x
    x = 74,505,422,672.81/430,819.76
  6. Step 6: Final answer
    x = 172,938.73

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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.