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Finding the Fourth Proportional to 611,142.42, 843,363.84 and 339,194.37

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Solution

The fourth proportional to 611,142.42, 843,363.84 and 339,194.37 is: 468,081.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,142.42 : 843,363.84 = 339,194.37 : x
  2. Step 2: Convert to fraction form
    611,142.42/843,363.84 = 339,194.37/x
  3. Step 3: Cross multiply
    611,142.42x = 843,363.84 × 339,194.37
  4. Step 4: Simplify right side
    611,142.42x = 286,064,266,389.58
  5. Step 5: Solve for x
    x = 286,064,266,389.58/611,142.42
  6. Step 6: Final answer
    x = 468,081.18

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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.