Home / 430,551.56-645,827.88-205,859.18

Finding the Fourth Proportional to 430,551.56, 645,827.88 and 205,859.18

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Solution

The fourth proportional to 430,551.56, 645,827.88 and 205,859.18 is: 308,789.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,551.56 : 645,827.88 = 205,859.18 : x
  2. Step 2: Convert to fraction form
    430,551.56/645,827.88 = 205,859.18/x
  3. Step 3: Cross multiply
    430,551.56x = 645,827.88 × 205,859.18
  4. Step 4: Simplify right side
    430,551.56x = 132,949,597,797.94
  5. Step 5: Solve for x
    x = 132,949,597,797.94/430,551.56
  6. Step 6: Final answer
    x = 308,789.03

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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.