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Finding the Fourth Proportional to 611,137.88, 843,379.26 and 339,223.28

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Solution

The fourth proportional to 611,137.88, 843,379.26 and 339,223.28 is: 468,133.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,137.88 : 843,379.26 = 339,223.28 : x
  2. Step 2: Convert to fraction form
    611,137.88/843,379.26 = 339,223.28/x
  3. Step 3: Cross multiply
    611,137.88x = 843,379.26 × 339,223.28
  4. Step 4: Simplify right side
    611,137.88x = 286,093,878,861.17
  5. Step 5: Solve for x
    x = 286,093,878,861.17/611,137.88
  6. Step 6: Final answer
    x = 468,133.11

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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.