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Finding the Fourth Proportional to 557,992.50, 770,089.85 and 316,249.12

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Solution

The fourth proportional to 557,992.50, 770,089.85 and 316,249.12 is: 436,457.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,992.50 : 770,089.85 = 316,249.12 : x
  2. Step 2: Convert to fraction form
    557,992.50/770,089.85 = 316,249.12/x
  3. Step 3: Cross multiply
    557,992.50x = 770,089.85 × 316,249.12
  4. Step 4: Simplify right side
    557,992.50x = 243,540,237,383.43
  5. Step 5: Solve for x
    x = 243,540,237,383.43/557,992.50
  6. Step 6: Final answer
    x = 436,457.90

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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.