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Finding the Fourth Proportional to 290,427.02, 435,378.09 and 201,722.30

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Solution

The fourth proportional to 290,427.02, 435,378.09 and 201,722.30 is: 302,401.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,427.02 : 435,378.09 = 201,722.30 : x
  2. Step 2: Convert to fraction form
    290,427.02/435,378.09 = 201,722.30/x
  3. Step 3: Cross multiply
    290,427.02x = 435,378.09 × 201,722.30
  4. Step 4: Simplify right side
    290,427.02x = 87,825,469,684.41
  5. Step 5: Solve for x
    x = 87,825,469,684.41/290,427.02
  6. Step 6: Final answer
    x = 302,401.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.