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Finding the Fourth Proportional to 321,312.20, 481,881.90 and 96,672.20

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Solution

The fourth proportional to 321,312.20, 481,881.90 and 96,672.20 is: 144,982.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,312.20 : 481,881.90 = 96,672.20 : x
  2. Step 2: Convert to fraction form
    321,312.20/481,881.90 = 96,672.20/x
  3. Step 3: Cross multiply
    321,312.20x = 481,881.90 × 96,672.20
  4. Step 4: Simplify right side
    321,312.20x = 46,584,583,413.18
  5. Step 5: Solve for x
    x = 46,584,583,413.18/321,312.20
  6. Step 6: Final answer
    x = 144,982.31

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1.5x scale

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.