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Finding the Fourth Proportional to 290,374.35, 400,651.16 and 163,041.54

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Solution

The fourth proportional to 290,374.35, 400,651.16 and 163,041.54 is: 224,960.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,374.35 : 400,651.16 = 163,041.54 : x
  2. Step 2: Convert to fraction form
    290,374.35/400,651.16 = 163,041.54/x
  3. Step 3: Cross multiply
    290,374.35x = 400,651.16 × 163,041.54
  4. Step 4: Simplify right side
    290,374.35x = 65,322,781,313.98
  5. Step 5: Solve for x
    x = 65,322,781,313.98/290,374.35
  6. Step 6: Final answer
    x = 224,960.58

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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.