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Finding the Fourth Proportional to 487,693.26, 731,388.06 and 172,076.22

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Solution

The fourth proportional to 487,693.26, 731,388.06 and 172,076.22 is: 258,060.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,693.26 : 731,388.06 = 172,076.22 : x
  2. Step 2: Convert to fraction form
    487,693.26/731,388.06 = 172,076.22/x
  3. Step 3: Cross multiply
    487,693.26x = 731,388.06 × 172,076.22
  4. Step 4: Simplify right side
    487,693.26x = 125,854,492,717.93
  5. Step 5: Solve for x
    x = 125,854,492,717.93/487,693.26
  6. Step 6: Final answer
    x = 258,060.76

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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.