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Finding the Fourth Proportional to 218,617.40, 327,185.43 and 134,430.89

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Solution

The fourth proportional to 218,617.40, 327,185.43 and 134,430.89 is: 201,190.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,617.40 : 327,185.43 = 134,430.89 : x
  2. Step 2: Convert to fraction form
    218,617.40/327,185.43 = 134,430.89/x
  3. Step 3: Cross multiply
    218,617.40x = 327,185.43 × 134,430.89
  4. Step 4: Simplify right side
    218,617.40x = 43,983,828,140.95
  5. Step 5: Solve for x
    x = 43,983,828,140.95/218,617.40
  6. Step 6: Final answer
    x = 201,190.88

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1.5x scale

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.