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Finding the Fourth Proportional to 218,720.89, 301,834.80 and 118,118.89

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Solution

The fourth proportional to 218,720.89, 301,834.80 and 118,118.89 is: 163,004.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,720.89 : 301,834.80 = 118,118.89 : x
  2. Step 2: Convert to fraction form
    218,720.89/301,834.80 = 118,118.89/x
  3. Step 3: Cross multiply
    218,720.89x = 301,834.80 × 118,118.89
  4. Step 4: Simplify right side
    218,720.89x = 35,652,391,539.37
  5. Step 5: Solve for x
    x = 35,652,391,539.37/218,720.89
  6. Step 6: Final answer
    x = 163,004.05

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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.