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Finding the Fourth Proportional to 340,855.20, 511,477.20 and 235,749.60

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Solution

The fourth proportional to 340,855.20, 511,477.20 and 235,749.60 is: 353,758.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,855.20 : 511,477.20 = 235,749.60 : x
  2. Step 2: Convert to fraction form
    340,855.20/511,477.20 = 235,749.60/x
  3. Step 3: Cross multiply
    340,855.20x = 511,477.20 × 235,749.60
  4. Step 4: Simplify right side
    340,855.20x = 120,580,545,309.12
  5. Step 5: Solve for x
    x = 120,580,545,309.12/340,855.20
  6. Step 6: Final answer
    x = 353,758.86

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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.