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Finding the Fourth Proportional to 290,571.32, 400,826.52 and 270,021.35

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Solution

The fourth proportional to 290,571.32, 400,826.52 and 270,021.35 is: 372,479.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,571.32 : 400,826.52 = 270,021.35 : x
  2. Step 2: Convert to fraction form
    290,571.32/400,826.52 = 270,021.35/x
  3. Step 3: Cross multiply
    290,571.32x = 400,826.52 × 270,021.35
  4. Step 4: Simplify right side
    290,571.32x = 108,231,716,042.07
  5. Step 5: Solve for x
    x = 108,231,716,042.07/290,571.32
  6. Step 6: Final answer
    x = 372,479.01

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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.