Home / 430,749.23-645,724.49-190,735.30

Finding the Fourth Proportional to 430,749.23, 645,724.49 and 190,735.30

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Solution

The fourth proportional to 430,749.23, 645,724.49 and 190,735.30 is: 285,926.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,749.23 : 645,724.49 = 190,735.30 : x
  2. Step 2: Convert to fraction form
    430,749.23/645,724.49 = 190,735.30/x
  3. Step 3: Cross multiply
    430,749.23x = 645,724.49 × 190,735.30
  4. Step 4: Simplify right side
    430,749.23x = 123,162,451,749.51
  5. Step 5: Solve for x
    x = 123,162,451,749.51/430,749.23
  6. Step 6: Final answer
    x = 285,926.11

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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.