Home / 486,995.37-672,040.71-272,137.20

Finding the Fourth Proportional to 486,995.37, 672,040.71 and 272,137.20

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Solution

The fourth proportional to 486,995.37, 672,040.71 and 272,137.20 is: 375,542.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,995.37 : 672,040.71 = 272,137.20 : x
  2. Step 2: Convert to fraction form
    486,995.37/672,040.71 = 272,137.20/x
  3. Step 3: Cross multiply
    486,995.37x = 672,040.71 × 272,137.20
  4. Step 4: Simplify right side
    486,995.37x = 182,887,277,105.41
  5. Step 5: Solve for x
    x = 182,887,277,105.41/486,995.37
  6. Step 6: Final answer
    x = 375,542.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.