Home / 487,029.78-672,115.53-272,170.46

Finding the Fourth Proportional to 487,029.78, 672,115.53 and 272,170.46

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Solution

The fourth proportional to 487,029.78, 672,115.53 and 272,170.46 is: 375,603.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,029.78 : 672,115.53 = 272,170.46 : x
  2. Step 2: Convert to fraction form
    487,029.78/672,115.53 = 272,170.46/x
  3. Step 3: Cross multiply
    487,029.78x = 672,115.53 × 272,170.46
  4. Step 4: Simplify right side
    487,029.78x = 182,929,992,973.24
  5. Step 5: Solve for x
    x = 182,929,992,973.24/487,029.78
  6. Step 6: Final answer
    x = 375,603.30

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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.