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Finding the Fourth Proportional to 290,405.03, 400,744.86 and 161,351.65

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Solution

The fourth proportional to 290,405.03, 400,744.86 and 161,351.65 is: 222,657.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,405.03 : 400,744.86 = 161,351.65 : x
  2. Step 2: Convert to fraction form
    290,405.03/400,744.86 = 161,351.65/x
  3. Step 3: Cross multiply
    290,405.03x = 400,744.86 × 161,351.65
  4. Step 4: Simplify right side
    290,405.03x = 64,660,842,386.29
  5. Step 5: Solve for x
    x = 64,660,842,386.29/290,405.03
  6. Step 6: Final answer
    x = 222,657.45

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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.