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Finding the Fourth Proportional to 264,130.80, 396,050.40 and 86,546.40

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Solution

The fourth proportional to 264,130.80, 396,050.40 and 86,546.40 is: 129,771.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,130.80 : 396,050.40 = 86,546.40 : x
  2. Step 2: Convert to fraction form
    264,130.80/396,050.40 = 86,546.40/x
  3. Step 3: Cross multiply
    264,130.80x = 396,050.40 × 86,546.40
  4. Step 4: Simplify right side
    264,130.80x = 34,276,736,338.56
  5. Step 5: Solve for x
    x = 34,276,736,338.56/264,130.80
  6. Step 6: Final answer
    x = 129,771.83

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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.