Home / 430,535.56-645,803.88-205,843.18

Finding the Fourth Proportional to 430,535.56, 645,803.88 and 205,843.18

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Solution

The fourth proportional to 430,535.56, 645,803.88 and 205,843.18 is: 308,765.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,535.56 : 645,803.88 = 205,843.18 : x
  2. Step 2: Convert to fraction form
    430,535.56/645,803.88 = 205,843.18/x
  3. Step 3: Cross multiply
    430,535.56x = 645,803.88 × 205,843.18
  4. Step 4: Simplify right side
    430,535.56x = 132,934,324,315.54
  5. Step 5: Solve for x
    x = 132,934,324,315.54/430,535.56
  6. Step 6: Final answer
    x = 308,765.03

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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.