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Finding the Fourth Proportional to 470,790.81, 649,683.66 and 255,936.29

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Solution

The fourth proportional to 470,790.81, 649,683.66 and 255,936.29 is: 353,187.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,790.81 : 649,683.66 = 255,936.29 : x
  2. Step 2: Convert to fraction form
    470,790.81/649,683.66 = 255,936.29/x
  3. Step 3: Cross multiply
    470,790.81x = 649,683.66 × 255,936.29
  4. Step 4: Simplify right side
    470,790.81x = 166,277,622,365.60
  5. Step 5: Solve for x
    x = 166,277,622,365.60/470,790.81
  6. Step 6: Final answer
    x = 353,187.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.