Home / 430,830.52-646,236.54-115,287.40

Finding the Fourth Proportional to 430,830.52, 646,236.54 and 115,287.40

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Solution

The fourth proportional to 430,830.52, 646,236.54 and 115,287.40 is: 172,928.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,830.52 : 646,236.54 = 115,287.40 : x
  2. Step 2: Convert to fraction form
    430,830.52/646,236.54 = 115,287.40/x
  3. Step 3: Cross multiply
    430,830.52x = 646,236.54 × 115,287.40
  4. Step 4: Simplify right side
    430,830.52x = 74,502,930,481.60
  5. Step 5: Solve for x
    x = 74,502,930,481.60/430,830.52
  6. Step 6: Final answer
    x = 172,928.63

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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.