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Finding the Fourth Proportional to 384,755.79, 574,316.16 and 339,305.33

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Solution

The fourth proportional to 384,755.79, 574,316.16 and 339,305.33 is: 506,473.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,755.79 : 574,316.16 = 339,305.33 : x
  2. Step 2: Convert to fraction form
    384,755.79/574,316.16 = 339,305.33/x
  3. Step 3: Cross multiply
    384,755.79x = 574,316.16 × 339,305.33
  4. Step 4: Simplify right side
    384,755.79x = 194,868,531,321.55
  5. Step 5: Solve for x
    x = 194,868,531,321.55/384,755.79
  6. Step 6: Final answer
    x = 506,473.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.