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Finding the Fourth Proportional to 218,803.95, 328,205.94 and 69,055.89

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Solution

The fourth proportional to 218,803.95, 328,205.94 and 69,055.89 is: 103,583.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,803.95 : 328,205.94 = 69,055.89 : x
  2. Step 2: Convert to fraction form
    218,803.95/328,205.94 = 69,055.89/x
  3. Step 3: Cross multiply
    218,803.95x = 328,205.94 × 69,055.89
  4. Step 4: Simplify right side
    218,803.95x = 22,664,553,289.99
  5. Step 5: Solve for x
    x = 22,664,553,289.99/218,803.95
  6. Step 6: Final answer
    x = 103,583.84

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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.