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Finding the Fourth Proportional to 546,240.78, 819,398.08 and 261,993.66

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Solution

The fourth proportional to 546,240.78, 819,398.08 and 261,993.66 is: 393,008.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,240.78 : 819,398.08 = 261,993.66 : x
  2. Step 2: Convert to fraction form
    546,240.78/819,398.08 = 261,993.66/x
  3. Step 3: Cross multiply
    546,240.78x = 819,398.08 × 261,993.66
  4. Step 4: Simplify right side
    546,240.78x = 214,677,101,976.17
  5. Step 5: Solve for x
    x = 214,677,101,976.17/546,240.78
  6. Step 6: Final answer
    x = 393,008.19

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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.