Home / 212,654.58-318,988.02-79,509.41

Finding the Fourth Proportional to 212,654.58, 318,988.02 and 79,509.41

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Solution

The fourth proportional to 212,654.58, 318,988.02 and 79,509.41 is: 119,266.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,654.58 : 318,988.02 = 79,509.41 : x
  2. Step 2: Convert to fraction form
    212,654.58/318,988.02 = 79,509.41/x
  3. Step 3: Cross multiply
    212,654.58x = 318,988.02 × 79,509.41
  4. Step 4: Simplify right side
    212,654.58x = 25,362,550,961.00
  5. Step 5: Solve for x
    x = 25,362,550,961.00/212,654.58
  6. Step 6: Final answer
    x = 119,266.42

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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.