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Finding the Fourth Proportional to 489,876.74, 676,006.88 and 272,099.54

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Solution

The fourth proportional to 489,876.74, 676,006.88 and 272,099.54 is: 375,484.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,876.74 : 676,006.88 = 272,099.54 : x
  2. Step 2: Convert to fraction form
    489,876.74/676,006.88 = 272,099.54/x
  3. Step 3: Cross multiply
    489,876.74x = 676,006.88 × 272,099.54
  4. Step 4: Simplify right side
    489,876.74x = 183,941,161,084.84
  5. Step 5: Solve for x
    x = 183,941,161,084.84/489,876.74
  6. Step 6: Final answer
    x = 375,484.58

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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.