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Finding the Fourth Proportional to 557,859.03, 769,861.69 and 316,133.56

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Solution

The fourth proportional to 557,859.03, 769,861.69 and 316,133.56 is: 436,273.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,859.03 : 769,861.69 = 316,133.56 : x
  2. Step 2: Convert to fraction form
    557,859.03/769,861.69 = 316,133.56/x
  3. Step 3: Cross multiply
    557,859.03x = 769,861.69 × 316,133.56
  4. Step 4: Simplify right side
    557,859.03x = 243,379,116,767.32
  5. Step 5: Solve for x
    x = 243,379,116,767.32/557,859.03
  6. Step 6: Final answer
    x = 436,273.51

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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.