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Finding the Fourth Proportional to 557,165.27, 768,880.18 and 315,441.56

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Solution

The fourth proportional to 557,165.27, 768,880.18 and 315,441.56 is: 435,304.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,165.27 : 768,880.18 = 315,441.56 : x
  2. Step 2: Convert to fraction form
    557,165.27/768,880.18 = 315,441.56/x
  3. Step 3: Cross multiply
    557,165.27x = 768,880.18 × 315,441.56
  4. Step 4: Simplify right side
    557,165.27x = 242,536,764,898.59
  5. Step 5: Solve for x
    x = 242,536,764,898.59/557,165.27
  6. Step 6: Final answer
    x = 435,304.89

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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.