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Finding the Fourth Proportional to 218,960.30, 328,624.99 and 85,933.98

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Solution

The fourth proportional to 218,960.30, 328,624.99 and 85,933.98 is: 128,973.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,960.30 : 328,624.99 = 85,933.98 : x
  2. Step 2: Convert to fraction form
    218,960.30/328,624.99 = 85,933.98/x
  3. Step 3: Cross multiply
    218,960.30x = 328,624.99 × 85,933.98
  4. Step 4: Simplify right side
    218,960.30x = 28,240,053,103.33
  5. Step 5: Solve for x
    x = 28,240,053,103.33/218,960.30
  6. Step 6: Final answer
    x = 128,973.39

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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.