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Finding the Fourth Proportional to 290,321.88, 400,676.38 and 169,492.86

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Solution

The fourth proportional to 290,321.88, 400,676.38 and 169,492.86 is: 233,918.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,321.88 : 400,676.38 = 169,492.86 : x
  2. Step 2: Convert to fraction form
    290,321.88/400,676.38 = 169,492.86/x
  3. Step 3: Cross multiply
    290,321.88x = 400,676.38 × 169,492.86
  4. Step 4: Simplify right side
    290,321.88x = 67,911,785,580.65
  5. Step 5: Solve for x
    x = 67,911,785,580.65/290,321.88
  6. Step 6: Final answer
    x = 233,918.94

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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.