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Finding the Fourth Proportional to 290,520.81, 400,881.42 and 169,574.58

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Solution

The fourth proportional to 290,520.81, 400,881.42 and 169,574.58 is: 233,991.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,520.81 : 400,881.42 = 169,574.58 : x
  2. Step 2: Convert to fraction form
    290,520.81/400,881.42 = 169,574.58/x
  3. Step 3: Cross multiply
    290,520.81x = 400,881.42 × 169,574.58
  4. Step 4: Simplify right side
    290,520.81x = 67,979,298,426.30
  5. Step 5: Solve for x
    x = 67,979,298,426.30/290,520.81
  6. Step 6: Final answer
    x = 233,991.15

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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.