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Finding the Fourth Proportional to 218,242.86, 301,172.18 and 122,749.52

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Solution

The fourth proportional to 218,242.86, 301,172.18 and 122,749.52 is: 169,392.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,242.86 : 301,172.18 = 122,749.52 : x
  2. Step 2: Convert to fraction form
    218,242.86/301,172.18 = 122,749.52/x
  3. Step 3: Cross multiply
    218,242.86x = 301,172.18 × 122,749.52
  4. Step 4: Simplify right side
    218,242.86x = 36,968,740,532.35
  5. Step 5: Solve for x
    x = 36,968,740,532.35/218,242.86
  6. Step 6: Final answer
    x = 169,392.67

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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.