Home / 216,629.20-324,943.80-145,770.40

Finding the Fourth Proportional to 216,629.20, 324,943.80 and 145,770.40

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Solution

The fourth proportional to 216,629.20, 324,943.80 and 145,770.40 is: 218,655.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,629.20 : 324,943.80 = 145,770.40 : x
  2. Step 2: Convert to fraction form
    216,629.20/324,943.80 = 145,770.40/x
  3. Step 3: Cross multiply
    216,629.20x = 324,943.80 × 145,770.40
  4. Step 4: Simplify right side
    216,629.20x = 47,367,187,703.52
  5. Step 5: Solve for x
    x = 47,367,187,703.52/216,629.20
  6. Step 6: Final answer
    x = 218,655.60

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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.