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Finding the Fourth Proportional to 290,455.10, 400,808.63 and 167,938.22

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Solution

The fourth proportional to 290,455.10, 400,808.63 and 167,938.22 is: 231,743.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,455.10 : 400,808.63 = 167,938.22 : x
  2. Step 2: Convert to fraction form
    290,455.10/400,808.63 = 167,938.22/x
  3. Step 3: Cross multiply
    290,455.10x = 400,808.63 × 167,938.22
  4. Step 4: Simplify right side
    290,455.10x = 67,311,085,039.10
  5. Step 5: Solve for x
    x = 67,311,085,039.10/290,455.10
  6. Step 6: Final answer
    x = 231,743.52

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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.