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Finding the Fourth Proportional to 489,959.52, 676,163.11 and 272,184.69

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Solution

The fourth proportional to 489,959.52, 676,163.11 and 272,184.69 is: 375,625.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,959.52 : 676,163.11 = 272,184.69 : x
  2. Step 2: Convert to fraction form
    489,959.52/676,163.11 = 272,184.69/x
  3. Step 3: Cross multiply
    489,959.52x = 676,163.11 × 272,184.69
  4. Step 4: Simplify right side
    489,959.52x = 184,041,248,339.94
  5. Step 5: Solve for x
    x = 184,041,248,339.94/489,959.52
  6. Step 6: Final answer
    x = 375,625.41

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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.