Home / 724,100.70-1,086,145.65-218,660.70

Finding the Fourth Proportional to 724,100.70, 1,086,145.65 and 218,660.70

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Solution

The fourth proportional to 724,100.70, 1,086,145.65 and 218,660.70 is: 327,989.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,100.70 : 1,086,145.65 = 218,660.70 : x
  2. Step 2: Convert to fraction form
    724,100.70/1,086,145.65 = 218,660.70/x
  3. Step 3: Cross multiply
    724,100.70x = 1,086,145.65 × 218,660.70
  4. Step 4: Simplify right side
    724,100.70x = 237,497,368,130.96
  5. Step 5: Solve for x
    x = 237,497,368,130.96/724,100.70
  6. Step 6: Final answer
    x = 327,989.42

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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.