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Finding the Fourth Proportional to 290,909.51, 401,452.49 and 163,586.01

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Solution

The fourth proportional to 290,909.51, 401,452.49 and 163,586.01 is: 225,747.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,909.51 : 401,452.49 = 163,586.01 : x
  2. Step 2: Convert to fraction form
    290,909.51/401,452.49 = 163,586.01/x
  3. Step 3: Cross multiply
    290,909.51x = 401,452.49 × 163,586.01
  4. Step 4: Simplify right side
    290,909.51x = 65,672,011,043.66
  5. Step 5: Solve for x
    x = 65,672,011,043.66/290,909.51
  6. Step 6: Final answer
    x = 225,747.21

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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.