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Finding the Fourth Proportional to 264,580.40, 396,830.10 and 87,087.80

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Solution

The fourth proportional to 264,580.40, 396,830.10 and 87,087.80 is: 130,618.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,580.40 : 396,830.10 = 87,087.80 : x
  2. Step 2: Convert to fraction form
    264,580.40/396,830.10 = 87,087.80/x
  3. Step 3: Cross multiply
    264,580.40x = 396,830.10 × 87,087.80
  4. Step 4: Simplify right side
    264,580.40x = 34,559,060,382.78
  5. Step 5: Solve for x
    x = 34,559,060,382.78/264,580.40
  6. Step 6: Final answer
    x = 130,618.37

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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.