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Finding the Fourth Proportional to 340,771.25, 470,344.49 and 211,807.14

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Solution

The fourth proportional to 340,771.25, 470,344.49 and 211,807.14 is: 292,343.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,771.25 : 470,344.49 = 211,807.14 : x
  2. Step 2: Convert to fraction form
    340,771.25/470,344.49 = 211,807.14/x
  3. Step 3: Cross multiply
    340,771.25x = 470,344.49 × 211,807.14
  4. Step 4: Simplify right side
    340,771.25x = 99,622,319,213.11
  5. Step 5: Solve for x
    x = 99,622,319,213.11/340,771.25
  6. Step 6: Final answer
    x = 292,343.67

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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.