Home / 464,642.75-641,432.25-311,625.02

Finding the Fourth Proportional to 464,642.75, 641,432.25 and 311,625.02

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Solution

The fourth proportional to 464,642.75, 641,432.25 and 311,625.02 is: 430,193.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    464,642.75 : 641,432.25 = 311,625.02 : x
  2. Step 2: Convert to fraction form
    464,642.75/641,432.25 = 311,625.02/x
  3. Step 3: Cross multiply
    464,642.75x = 641,432.25 × 311,625.02
  4. Step 4: Simplify right side
    464,642.75x = 199,886,334,527.73
  5. Step 5: Solve for x
    x = 199,886,334,527.73/464,642.75
  6. Step 6: Final answer
    x = 430,193.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.