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Finding the Fourth Proportional to 340,858.80, 511,347.60 and 141,069.60

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Solution

The fourth proportional to 340,858.80, 511,347.60 and 141,069.60 is: 211,628.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,858.80 : 511,347.60 = 141,069.60 : x
  2. Step 2: Convert to fraction form
    340,858.80/511,347.60 = 141,069.60/x
  3. Step 3: Cross multiply
    340,858.80x = 511,347.60 × 141,069.60
  4. Step 4: Simplify right side
    340,858.80x = 72,135,601,392.96
  5. Step 5: Solve for x
    x = 72,135,601,392.96/340,858.80
  6. Step 6: Final answer
    x = 211,628.98

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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.