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Finding the Fourth Proportional to 489,960.84, 676,164.92 and 272,186.00

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Solution

The fourth proportional to 489,960.84, 676,164.92 and 272,186.00 is: 375,627.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,960.84 : 676,164.92 = 272,186.00 : x
  2. Step 2: Convert to fraction form
    489,960.84/676,164.92 = 272,186.00/x
  3. Step 3: Cross multiply
    489,960.84x = 676,164.92 × 272,186.00
  4. Step 4: Simplify right side
    489,960.84x = 184,042,626,265.30
  5. Step 5: Solve for x
    x = 184,042,626,265.30/489,960.84
  6. Step 6: Final answer
    x = 375,627.22

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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.