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Finding the Fourth Proportional to 451,223.66, 622,971.78 and 290,358.27

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Solution

The fourth proportional to 451,223.66, 622,971.78 and 290,358.27 is: 400,876.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,223.66 : 622,971.78 = 290,358.27 : x
  2. Step 2: Convert to fraction form
    451,223.66/622,971.78 = 290,358.27/x
  3. Step 3: Cross multiply
    451,223.66x = 622,971.78 × 290,358.27
  4. Step 4: Simplify right side
    451,223.66x = 180,885,007,210.78
  5. Step 5: Solve for x
    x = 180,885,007,210.78/451,223.66
  6. Step 6: Final answer
    x = 400,876.60

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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.