Home / 487,021.27-672,087.41-272,161.28

Finding the Fourth Proportional to 487,021.27, 672,087.41 and 272,161.28

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Solution

The fourth proportional to 487,021.27, 672,087.41 and 272,161.28 is: 375,581.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,021.27 : 672,087.41 = 272,161.28 : x
  2. Step 2: Convert to fraction form
    487,021.27/672,087.41 = 272,161.28/x
  3. Step 3: Cross multiply
    487,021.27x = 672,087.41 × 272,161.28
  4. Step 4: Simplify right side
    487,021.27x = 182,916,165,056.24
  5. Step 5: Solve for x
    x = 182,916,165,056.24/487,021.27
  6. Step 6: Final answer
    x = 375,581.47

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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.