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Finding the Fourth Proportional to 340,575.21, 470,008.37 and 189,672.21

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Solution

The fourth proportional to 340,575.21, 470,008.37 and 189,672.21 is: 261,755.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,575.21 : 470,008.37 = 189,672.21 : x
  2. Step 2: Convert to fraction form
    340,575.21/470,008.37 = 189,672.21/x
  3. Step 3: Cross multiply
    340,575.21x = 470,008.37 × 189,672.21
  4. Step 4: Simplify right side
    340,575.21x = 89,147,526,256.40
  5. Step 5: Solve for x
    x = 89,147,526,256.40/340,575.21
  6. Step 6: Final answer
    x = 261,755.77

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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.