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Finding the Fourth Proportional to 306,481.07, 459,721.59 and 84,865.07

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Solution

The fourth proportional to 306,481.07, 459,721.59 and 84,865.07 is: 127,297.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,481.07 : 459,721.59 = 84,865.07 : x
  2. Step 2: Convert to fraction form
    306,481.07/459,721.59 = 84,865.07/x
  3. Step 3: Cross multiply
    306,481.07x = 459,721.59 × 84,865.07
  4. Step 4: Simplify right side
    306,481.07x = 39,014,304,915.86
  5. Step 5: Solve for x
    x = 39,014,304,915.86/306,481.07
  6. Step 6: Final answer
    x = 127,297.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.