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Finding the Fourth Proportional to 489,836.17, 675,951.48 and 272,058.77

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Solution

The fourth proportional to 489,836.17, 675,951.48 and 272,058.77 is: 375,428.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,836.17 : 675,951.48 = 272,058.77 : x
  2. Step 2: Convert to fraction form
    489,836.17/675,951.48 = 272,058.77/x
  3. Step 3: Cross multiply
    489,836.17x = 675,951.48 × 272,058.77
  4. Step 4: Simplify right side
    489,836.17x = 183,898,527,634.66
  5. Step 5: Solve for x
    x = 183,898,527,634.66/489,836.17
  6. Step 6: Final answer
    x = 375,428.64

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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.