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Finding the Fourth Proportional to 476,087.55, 656,978.84 and 261,222.27

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Solution

The fourth proportional to 476,087.55, 656,978.84 and 261,222.27 is: 360,474.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,087.55 : 656,978.84 = 261,222.27 : x
  2. Step 2: Convert to fraction form
    476,087.55/656,978.84 = 261,222.27/x
  3. Step 3: Cross multiply
    476,087.55x = 656,978.84 × 261,222.27
  4. Step 4: Simplify right side
    476,087.55x = 171,617,502,620.66
  5. Step 5: Solve for x
    x = 171,617,502,620.66/476,087.55
  6. Step 6: Final answer
    x = 360,474.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.