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Finding the Fourth Proportional to 290,798.57, 401,242.62 and 169,916.50

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Solution

The fourth proportional to 290,798.57, 401,242.62 and 169,916.50 is: 234,450.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,798.57 : 401,242.62 = 169,916.50 : x
  2. Step 2: Convert to fraction form
    290,798.57/401,242.62 = 169,916.50/x
  3. Step 3: Cross multiply
    290,798.57x = 401,242.62 × 169,916.50
  4. Step 4: Simplify right side
    290,798.57x = 68,177,741,641.23
  5. Step 5: Solve for x
    x = 68,177,741,641.23/290,798.57
  6. Step 6: Final answer
    x = 234,450.06

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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.