Home / 212,330.34-318,485.07-79,200.36

Finding the Fourth Proportional to 212,330.34, 318,485.07 and 79,200.36

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Solution

The fourth proportional to 212,330.34, 318,485.07 and 79,200.36 is: 118,796.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,330.34 : 318,485.07 = 79,200.36 : x
  2. Step 2: Convert to fraction form
    212,330.34/318,485.07 = 79,200.36/x
  3. Step 3: Cross multiply
    212,330.34x = 318,485.07 × 79,200.36
  4. Step 4: Simplify right side
    212,330.34x = 25,224,132,198.63
  5. Step 5: Solve for x
    x = 25,224,132,198.63/212,330.34
  6. Step 6: Final answer
    x = 118,796.65

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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.