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Finding the Fourth Proportional to 489,661.72, 675,754.27 and 271,870.39

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Solution

The fourth proportional to 489,661.72, 675,754.27 and 271,870.39 is: 375,192.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,661.72 : 675,754.27 = 271,870.39 : x
  2. Step 2: Convert to fraction form
    489,661.72/675,754.27 = 271,870.39/x
  3. Step 3: Cross multiply
    489,661.72x = 675,754.27 × 271,870.39
  4. Step 4: Simplify right side
    489,661.72x = 183,717,577,094.08
  5. Step 5: Solve for x
    x = 183,717,577,094.08/489,661.72
  6. Step 6: Final answer
    x = 375,192.85

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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.