Home / 430,540.56-645,811.38-205,848.18

Finding the Fourth Proportional to 430,540.56, 645,811.38 and 205,848.18

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Solution

The fourth proportional to 430,540.56, 645,811.38 and 205,848.18 is: 308,772.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,540.56 : 645,811.38 = 205,848.18 : x
  2. Step 2: Convert to fraction form
    430,540.56/645,811.38 = 205,848.18/x
  3. Step 3: Cross multiply
    430,540.56x = 645,811.38 × 205,848.18
  4. Step 4: Simplify right side
    430,540.56x = 132,939,097,196.29
  5. Step 5: Solve for x
    x = 132,939,097,196.29/430,540.56
  6. Step 6: Final answer
    x = 308,772.53

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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.