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Finding the Fourth Proportional to 257,732.20, 385,942.20 and 245,922.40

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Solution

The fourth proportional to 257,732.20, 385,942.20 and 245,922.40 is: 368,257.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,732.20 : 385,942.20 = 245,922.40 : x
  2. Step 2: Convert to fraction form
    257,732.20/385,942.20 = 245,922.40/x
  3. Step 3: Cross multiply
    257,732.20x = 385,942.20 × 245,922.40
  4. Step 4: Simplify right side
    257,732.20x = 94,911,832,085.28
  5. Step 5: Solve for x
    x = 94,911,832,085.28/257,732.20
  6. Step 6: Final answer
    x = 368,257.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.