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Finding the Fourth Proportional to 487,920.27, 673,315.48 and 270,138.63

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Solution

The fourth proportional to 487,920.27, 673,315.48 and 270,138.63 is: 372,783.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,920.27 : 673,315.48 = 270,138.63 : x
  2. Step 2: Convert to fraction form
    487,920.27/673,315.48 = 270,138.63/x
  3. Step 3: Cross multiply
    487,920.27x = 673,315.48 × 270,138.63
  4. Step 4: Simplify right side
    487,920.27x = 181,888,521,324.99
  5. Step 5: Solve for x
    x = 181,888,521,324.99/487,920.27
  6. Step 6: Final answer
    x = 372,783.29

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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.