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Finding the Fourth Proportional to 290,501.58, 400,469.68 and 203,015.07

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Solution

The fourth proportional to 290,501.58, 400,469.68 and 203,015.07 is: 279,865.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,501.58 : 400,469.68 = 203,015.07 : x
  2. Step 2: Convert to fraction form
    290,501.58/400,469.68 = 203,015.07/x
  3. Step 3: Cross multiply
    290,501.58x = 400,469.68 × 203,015.07
  4. Step 4: Simplify right side
    290,501.58x = 81,301,380,118.08
  5. Step 5: Solve for x
    x = 81,301,380,118.08/290,501.58
  6. Step 6: Final answer
    x = 279,865.54

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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.