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Finding the Fourth Proportional to 290,504.58, 400,944.24 and 169,644.89

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Solution

The fourth proportional to 290,504.58, 400,944.24 and 169,644.89 is: 234,137.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,504.58 : 400,944.24 = 169,644.89 : x
  2. Step 2: Convert to fraction form
    290,504.58/400,944.24 = 169,644.89/x
  3. Step 3: Cross multiply
    290,504.58x = 400,944.24 × 169,644.89
  4. Step 4: Simplify right side
    290,504.58x = 68,018,139,486.21
  5. Step 5: Solve for x
    x = 68,018,139,486.21/290,504.58
  6. Step 6: Final answer
    x = 234,137.92

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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.