Home / 212,368.20-318,551.91-145,605.93

Finding the Fourth Proportional to 212,368.20, 318,551.91 and 145,605.93

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Solution

The fourth proportional to 212,368.20, 318,551.91 and 145,605.93 is: 218,408.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,368.20 : 318,551.91 = 145,605.93 : x
  2. Step 2: Convert to fraction form
    212,368.20/318,551.91 = 145,605.93/x
  3. Step 3: Cross multiply
    212,368.20x = 318,551.91 × 145,605.93
  4. Step 4: Simplify right side
    212,368.20x = 46,383,045,516.07
  5. Step 5: Solve for x
    x = 46,383,045,516.07/212,368.20
  6. Step 6: Final answer
    x = 218,408.63

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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.