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Finding the Fourth Proportional to 489,765.54, 675,853.70 and 271,988.04

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Solution

The fourth proportional to 489,765.54, 675,853.70 and 271,988.04 is: 375,330.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,765.54 : 675,853.70 = 271,988.04 : x
  2. Step 2: Convert to fraction form
    489,765.54/675,853.70 = 271,988.04/x
  3. Step 3: Cross multiply
    489,765.54x = 675,853.70 × 271,988.04
  4. Step 4: Simplify right side
    489,765.54x = 183,824,121,829.81
  5. Step 5: Solve for x
    x = 183,824,121,829.81/489,765.54
  6. Step 6: Final answer
    x = 375,330.86

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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.