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Finding the Fourth Proportional to 489,992.43, 676,208.63 and 272,217.54

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Solution

The fourth proportional to 489,992.43, 676,208.63 and 272,217.54 is: 375,670.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,992.43 : 676,208.63 = 272,217.54 : x
  2. Step 2: Convert to fraction form
    489,992.43/676,208.63 = 272,217.54/x
  3. Step 3: Cross multiply
    489,992.43x = 676,208.63 × 272,217.54
  4. Step 4: Simplify right side
    489,992.43x = 184,075,846,530.57
  5. Step 5: Solve for x
    x = 184,075,846,530.57/489,992.43
  6. Step 6: Final answer
    x = 375,670.80

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1.5x scale

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.