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Finding the Fourth Proportional to 290,785.23, 401,224.25 and 169,903.16

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Solution

The fourth proportional to 290,785.23, 401,224.25 and 169,903.16 is: 234,431.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,785.23 : 401,224.25 = 169,903.16 : x
  2. Step 2: Convert to fraction form
    290,785.23/401,224.25 = 169,903.16/x
  3. Step 3: Cross multiply
    290,785.23x = 401,224.25 × 169,903.16
  4. Step 4: Simplify right side
    290,785.23x = 68,169,267,943.63
  5. Step 5: Solve for x
    x = 68,169,267,943.63/290,785.23
  6. Step 6: Final answer
    x = 234,431.67

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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.