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Finding the Fourth Proportional to 290,803.56, 401,614.86 and 259,103.60

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Solution

The fourth proportional to 290,803.56, 401,614.86 and 259,103.60 is: 357,835.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,803.56 : 401,614.86 = 259,103.60 : x
  2. Step 2: Convert to fraction form
    290,803.56/401,614.86 = 259,103.60/x
  3. Step 3: Cross multiply
    290,803.56x = 401,614.86 × 259,103.60
  4. Step 4: Simplify right side
    290,803.56x = 104,059,856,039.50
  5. Step 5: Solve for x
    x = 104,059,856,039.50/290,803.56
  6. Step 6: Final answer
    x = 357,835.56

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1.5x scale

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.