Home / 430,819.75-646,229.63-115,268.46

Finding the Fourth Proportional to 430,819.75, 646,229.63 and 115,268.46

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Solution

The fourth proportional to 430,819.75, 646,229.63 and 115,268.46 is: 172,902.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,819.75 : 646,229.63 = 115,268.46 : x
  2. Step 2: Convert to fraction form
    430,819.75/646,229.63 = 115,268.46/x
  3. Step 3: Cross multiply
    430,819.75x = 646,229.63 × 115,268.46
  4. Step 4: Simplify right side
    430,819.75x = 74,489,894,256.47
  5. Step 5: Solve for x
    x = 74,489,894,256.47/430,819.75
  6. Step 6: Final answer
    x = 172,902.69

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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.