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Finding the Fourth Proportional to 218,256.55, 301,191.02 and 122,763.31

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Solution

The fourth proportional to 218,256.55, 301,191.02 and 122,763.31 is: 169,411.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,256.55 : 301,191.02 = 122,763.31 : x
  2. Step 2: Convert to fraction form
    218,256.55/301,191.02 = 122,763.31/x
  3. Step 3: Cross multiply
    218,256.55x = 301,191.02 × 122,763.31
  4. Step 4: Simplify right side
    218,256.55x = 36,975,205,943.66
  5. Step 5: Solve for x
    x = 36,975,205,943.66/218,256.55
  6. Step 6: Final answer
    x = 169,411.67

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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.