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Finding the Fourth Proportional to 290,373.66, 400,705.26 and 163,054.62

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Solution

The fourth proportional to 290,373.66, 400,705.26 and 163,054.62 is: 225,009.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,373.66 : 400,705.26 = 163,054.62 : x
  2. Step 2: Convert to fraction form
    290,373.66/400,705.26 = 163,054.62/x
  3. Step 3: Cross multiply
    290,373.66x = 400,705.26 × 163,054.62
  4. Step 4: Simplify right side
    290,373.66x = 65,336,843,901.30
  5. Step 5: Solve for x
    x = 65,336,843,901.30/290,373.66
  6. Step 6: Final answer
    x = 225,009.54

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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.