Home / 430,940.07-646,410.09-135,452.07

Finding the Fourth Proportional to 430,940.07, 646,410.09 and 135,452.07

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Solution

The fourth proportional to 430,940.07, 646,410.09 and 135,452.07 is: 203,178.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,940.07 : 646,410.09 = 135,452.07 : x
  2. Step 2: Convert to fraction form
    430,940.07/646,410.09 = 135,452.07/x
  3. Step 3: Cross multiply
    430,940.07x = 646,410.09 × 135,452.07
  4. Step 4: Simplify right side
    430,940.07x = 87,557,584,759.39
  5. Step 5: Solve for x
    x = 87,557,584,759.39/430,940.07
  6. Step 6: Final answer
    x = 203,178.10

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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.