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Finding the Fourth Proportional to 496,936.80, 745,502.40 and 212,626.80

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Solution

The fourth proportional to 496,936.80, 745,502.40 and 212,626.80 is: 318,981.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,936.80 : 745,502.40 = 212,626.80 : x
  2. Step 2: Convert to fraction form
    496,936.80/745,502.40 = 212,626.80/x
  3. Step 3: Cross multiply
    496,936.80x = 745,502.40 × 212,626.80
  4. Step 4: Simplify right side
    496,936.80x = 158,513,789,704.32
  5. Step 5: Solve for x
    x = 158,513,789,704.32/496,936.80
  6. Step 6: Final answer
    x = 318,981.79

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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.