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Finding the Fourth Proportional to 290,535.28, 400,895.04 and 163,186.48

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Solution

The fourth proportional to 290,535.28, 400,895.04 and 163,186.48 is: 225,172.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,535.28 : 400,895.04 = 163,186.48 : x
  2. Step 2: Convert to fraction form
    290,535.28/400,895.04 = 163,186.48/x
  3. Step 3: Cross multiply
    290,535.28x = 400,895.04 × 163,186.48
  4. Step 4: Simplify right side
    290,535.28x = 65,420,650,427.06
  5. Step 5: Solve for x
    x = 65,420,650,427.06/290,535.28
  6. Step 6: Final answer
    x = 225,172.83

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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.