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Finding the Fourth Proportional to 291,271.38, 437,076.90 and 122,781.39

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Solution

The fourth proportional to 291,271.38, 437,076.90 and 122,781.39 is: 184,243.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,271.38 : 437,076.90 = 122,781.39 : x
  2. Step 2: Convert to fraction form
    291,271.38/437,076.90 = 122,781.39/x
  3. Step 3: Cross multiply
    291,271.38x = 437,076.90 × 122,781.39
  4. Step 4: Simplify right side
    291,271.38x = 53,664,909,318.89
  5. Step 5: Solve for x
    x = 53,664,909,318.89/291,271.38
  6. Step 6: Final answer
    x = 184,243.67

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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.