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Finding the Fourth Proportional to 290,746.86, 401,171.84 and 169,864.79

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Solution

The fourth proportional to 290,746.86, 401,171.84 and 169,864.79 is: 234,379.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,746.86 : 401,171.84 = 169,864.79 : x
  2. Step 2: Convert to fraction form
    290,746.86/401,171.84 = 169,864.79/x
  3. Step 3: Cross multiply
    290,746.86x = 401,171.84 × 169,864.79
  4. Step 4: Simplify right side
    290,746.86x = 68,144,970,355.51
  5. Step 5: Solve for x
    x = 68,144,970,355.51/290,746.86
  6. Step 6: Final answer
    x = 234,379.04

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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.