Home / 430,939.15-646,406.96-131,418.85

Finding the Fourth Proportional to 430,939.15, 646,406.96 and 131,418.85

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Solution

The fourth proportional to 430,939.15, 646,406.96 and 131,418.85 is: 197,127.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,939.15 : 646,406.96 = 131,418.85 : x
  2. Step 2: Convert to fraction form
    430,939.15/646,406.96 = 131,418.85/x
  3. Step 3: Cross multiply
    430,939.15x = 646,406.96 × 131,418.85
  4. Step 4: Simplify right side
    430,939.15x = 84,950,059,315.20
  5. Step 5: Solve for x
    x = 84,950,059,315.20/430,939.15
  6. Step 6: Final answer
    x = 197,127.74

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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.