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Finding the Fourth Proportional to 557,992.72, 770,090.17 and 316,249.35

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Solution

The fourth proportional to 557,992.72, 770,090.17 and 316,249.35 is: 436,458.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,992.72 : 770,090.17 = 316,249.35 : x
  2. Step 2: Convert to fraction form
    557,992.72/770,090.17 = 316,249.35/x
  3. Step 3: Cross multiply
    557,992.72x = 770,090.17 × 316,249.35
  4. Step 4: Simplify right side
    557,992.72x = 243,540,515,703.89
  5. Step 5: Solve for x
    x = 243,540,515,703.89/557,992.72
  6. Step 6: Final answer
    x = 436,458.23

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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.