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Finding the Fourth Proportional to 218,554.79, 327,602.52 and 100,128.74

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Solution

The fourth proportional to 218,554.79, 327,602.52 and 100,128.74 is: 150,087.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,554.79 : 327,602.52 = 100,128.74 : x
  2. Step 2: Convert to fraction form
    218,554.79/327,602.52 = 100,128.74/x
  3. Step 3: Cross multiply
    218,554.79x = 327,602.52 × 100,128.74
  4. Step 4: Simplify right side
    218,554.79x = 32,802,425,910.41
  5. Step 5: Solve for x
    x = 32,802,425,910.41/218,554.79
  6. Step 6: Final answer
    x = 150,087.89

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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.