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Finding the Fourth Proportional to 496,795.80, 745,290.90 and 212,485.80

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Solution

The fourth proportional to 496,795.80, 745,290.90 and 212,485.80 is: 318,770.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,795.80 : 745,290.90 = 212,485.80 : x
  2. Step 2: Convert to fraction form
    496,795.80/745,290.90 = 212,485.80/x
  3. Step 3: Cross multiply
    496,795.80x = 745,290.90 × 212,485.80
  4. Step 4: Simplify right side
    496,795.80x = 158,363,733,119.22
  5. Step 5: Solve for x
    x = 158,363,733,119.22/496,795.80
  6. Step 6: Final answer
    x = 318,770.27

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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.