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Finding the Fourth Proportional to 264,389.79, 396,500.58 and 86,855.61

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Solution

The fourth proportional to 264,389.79, 396,500.58 and 86,855.61 is: 130,255.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,389.79 : 396,500.58 = 86,855.61 : x
  2. Step 2: Convert to fraction form
    264,389.79/396,500.58 = 86,855.61/x
  3. Step 3: Cross multiply
    264,389.79x = 396,500.58 × 86,855.61
  4. Step 4: Simplify right side
    264,389.79x = 34,438,299,741.25
  5. Step 5: Solve for x
    x = 34,438,299,741.25/264,389.79
  6. Step 6: Final answer
    x = 130,255.79

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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.