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Finding the Fourth Proportional to 280,662.93, 421,260.53 and 173,723.38

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Solution

The fourth proportional to 280,662.93, 421,260.53 and 173,723.38 is: 260,749.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,662.93 : 421,260.53 = 173,723.38 : x
  2. Step 2: Convert to fraction form
    280,662.93/421,260.53 = 173,723.38/x
  3. Step 3: Cross multiply
    280,662.93x = 421,260.53 × 173,723.38
  4. Step 4: Simplify right side
    280,662.93x = 73,182,801,210.42
  5. Step 5: Solve for x
    x = 73,182,801,210.42/280,662.93
  6. Step 6: Final answer
    x = 260,749.79

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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.