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Finding the Fourth Proportional to 340,720.22, 470,197.01 and 187,763.90

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Solution

The fourth proportional to 340,720.22, 470,197.01 and 187,763.90 is: 259,115.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,720.22 : 470,197.01 = 187,763.90 : x
  2. Step 2: Convert to fraction form
    340,720.22/470,197.01 = 187,763.90/x
  3. Step 3: Cross multiply
    340,720.22x = 470,197.01 × 187,763.90
  4. Step 4: Simplify right side
    340,720.22x = 88,286,023,773.78
  5. Step 5: Solve for x
    x = 88,286,023,773.78/340,720.22
  6. Step 6: Final answer
    x = 259,115.89

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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.