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Finding the Fourth Proportional to 581,076.72, 869,740.20 and 300,207.60

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Solution

The fourth proportional to 581,076.72, 869,740.20 and 300,207.60 is: 449,342.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,076.72 : 869,740.20 = 300,207.60 : x
  2. Step 2: Convert to fraction form
    581,076.72/869,740.20 = 300,207.60/x
  3. Step 3: Cross multiply
    581,076.72x = 869,740.20 × 300,207.60
  4. Step 4: Simplify right side
    581,076.72x = 261,102,618,065.52
  5. Step 5: Solve for x
    x = 261,102,618,065.52/581,076.72
  6. Step 6: Final answer
    x = 449,342.76

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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.