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Finding the Fourth Proportional to 355,463.72, 490,257.59 and 268,538.67

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Solution

The fourth proportional to 355,463.72, 490,257.59 and 268,538.67 is: 370,370.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,463.72 : 490,257.59 = 268,538.67 : x
  2. Step 2: Convert to fraction form
    355,463.72/490,257.59 = 268,538.67/x
  3. Step 3: Cross multiply
    355,463.72x = 490,257.59 × 268,538.67
  4. Step 4: Simplify right side
    355,463.72x = 131,653,121,176.01
  5. Step 5: Solve for x
    x = 131,653,121,176.01/355,463.72
  6. Step 6: Final answer
    x = 370,370.07

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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.