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Finding the Fourth Proportional to 483,221.88, 724,776.51 and 128,263.47

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Solution

The fourth proportional to 483,221.88, 724,776.51 and 128,263.47 is: 192,380.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,221.88 : 724,776.51 = 128,263.47 : x
  2. Step 2: Convert to fraction form
    483,221.88/724,776.51 = 128,263.47/x
  3. Step 3: Cross multiply
    483,221.88x = 724,776.51 × 128,263.47
  4. Step 4: Simplify right side
    483,221.88x = 92,962,350,147.09
  5. Step 5: Solve for x
    x = 92,962,350,147.09/483,221.88
  6. Step 6: Final answer
    x = 192,380.26

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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.