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Finding the Fourth Proportional to 543,138.40, 814,703.55 and 164,058.40

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Solution

The fourth proportional to 543,138.40, 814,703.55 and 164,058.40 is: 246,086.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,138.40 : 814,703.55 = 164,058.40 : x
  2. Step 2: Convert to fraction form
    543,138.40/814,703.55 = 164,058.40/x
  3. Step 3: Cross multiply
    543,138.40x = 814,703.55 × 164,058.40
  4. Step 4: Simplify right side
    543,138.40x = 133,658,960,887.32
  5. Step 5: Solve for x
    x = 133,658,960,887.32/543,138.40
  6. Step 6: Final answer
    x = 246,086.38

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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.