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Finding the Fourth Proportional to 218,563.56, 301,614.84 and 123,079.68

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Solution

The fourth proportional to 218,563.56, 301,614.84 and 123,079.68 is: 169,848.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,563.56 : 301,614.84 = 123,079.68 : x
  2. Step 2: Convert to fraction form
    218,563.56/301,614.84 = 123,079.68/x
  3. Step 3: Cross multiply
    218,563.56x = 301,614.84 × 123,079.68
  4. Step 4: Simplify right side
    218,563.56x = 37,122,657,990.45
  5. Step 5: Solve for x
    x = 37,122,657,990.45/218,563.56
  6. Step 6: Final answer
    x = 169,848.34

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1.5x scale

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.