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Finding the Fourth Proportional to 545,692.70, 818,339.49 and 208,566.65

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Solution

The fourth proportional to 545,692.70, 818,339.49 and 208,566.65 is: 312,773.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,692.70 : 818,339.49 = 208,566.65 : x
  2. Step 2: Convert to fraction form
    545,692.70/818,339.49 = 208,566.65/x
  3. Step 3: Cross multiply
    545,692.70x = 818,339.49 × 208,566.65
  4. Step 4: Simplify right side
    545,692.70x = 170,678,325,992.01
  5. Step 5: Solve for x
    x = 170,678,325,992.01/545,692.70
  6. Step 6: Final answer
    x = 312,773.70

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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.