Home / 430,605.27-646,001.25-131,078.02

Finding the Fourth Proportional to 430,605.27, 646,001.25 and 131,078.02

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Solution

The fourth proportional to 430,605.27, 646,001.25 and 131,078.02 is: 196,645.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,605.27 : 646,001.25 = 131,078.02 : x
  2. Step 2: Convert to fraction form
    430,605.27/646,001.25 = 131,078.02/x
  3. Step 3: Cross multiply
    430,605.27x = 646,001.25 × 131,078.02
  4. Step 4: Simplify right side
    430,605.27x = 84,676,564,767.53
  5. Step 5: Solve for x
    x = 84,676,564,767.53/430,605.27
  6. Step 6: Final answer
    x = 196,645.44

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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.