Home / 487,028.78-672,114.15-272,169.46

Finding the Fourth Proportional to 487,028.78, 672,114.15 and 272,169.46

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Solution

The fourth proportional to 487,028.78, 672,114.15 and 272,169.46 is: 375,601.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,028.78 : 672,114.15 = 272,169.46 : x
  2. Step 2: Convert to fraction form
    487,028.78/672,114.15 = 272,169.46/x
  3. Step 3: Cross multiply
    487,028.78x = 672,114.15 × 272,169.46
  4. Step 4: Simplify right side
    487,028.78x = 182,928,945,263.86
  5. Step 5: Solve for x
    x = 182,928,945,263.86/487,028.78
  6. Step 6: Final answer
    x = 375,601.92

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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.