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Finding the Fourth Proportional to 264,573.12, 396,914.34 and 87,090.78

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Solution

The fourth proportional to 264,573.12, 396,914.34 and 87,090.78 is: 130,654.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,573.12 : 396,914.34 = 87,090.78 : x
  2. Step 2: Convert to fraction form
    264,573.12/396,914.34 = 87,090.78/x
  3. Step 3: Cross multiply
    264,573.12x = 396,914.34 × 87,090.78
  4. Step 4: Simplify right side
    264,573.12x = 34,567,579,463.79
  5. Step 5: Solve for x
    x = 34,567,579,463.79/264,573.12
  6. Step 6: Final answer
    x = 130,654.16

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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.