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Finding the Fourth Proportional to 290,363.63, 400,765.79 and 161,346.35

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Solution

The fourth proportional to 290,363.63, 400,765.79 and 161,346.35 is: 222,693.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,363.63 : 400,765.79 = 161,346.35 : x
  2. Step 2: Convert to fraction form
    290,363.63/400,765.79 = 161,346.35/x
  3. Step 3: Cross multiply
    290,363.63x = 400,765.79 × 161,346.35
  4. Step 4: Simplify right side
    290,363.63x = 64,662,098,826.65
  5. Step 5: Solve for x
    x = 64,662,098,826.65/290,363.63
  6. Step 6: Final answer
    x = 222,693.52

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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.