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Finding the Fourth Proportional to 264,429.63, 396,693.65 and 86,943.65

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Solution

The fourth proportional to 264,429.63, 396,693.65 and 86,943.65 is: 130,431.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,429.63 : 396,693.65 = 86,943.65 : x
  2. Step 2: Convert to fraction form
    264,429.63/396,693.65 = 86,943.65/x
  3. Step 3: Cross multiply
    264,429.63x = 396,693.65 × 86,943.65
  4. Step 4: Simplify right side
    264,429.63x = 34,489,992,096.71
  5. Step 5: Solve for x
    x = 34,489,992,096.71/264,429.63
  6. Step 6: Final answer
    x = 130,431.65

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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.