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Finding the Fourth Proportional to 290,369.00, 400,695.58 and 161,315.80

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Solution

The fourth proportional to 290,369.00, 400,695.58 and 161,315.80 is: 222,608.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,369.00 : 400,695.58 = 161,315.80 : x
  2. Step 2: Convert to fraction form
    290,369.00/400,695.58 = 161,315.80/x
  3. Step 3: Cross multiply
    290,369.00x = 400,695.58 × 161,315.80
  4. Step 4: Simplify right side
    290,369.00x = 64,638,526,639.14
  5. Step 5: Solve for x
    x = 64,638,526,639.14/290,369.00
  6. Step 6: Final answer
    x = 222,608.23

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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.