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Finding the Fourth Proportional to 400,698.02, 601,220.74 and 220,563.34

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Solution

The fourth proportional to 400,698.02, 601,220.74 and 220,563.34 is: 330,940.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,698.02 : 601,220.74 = 220,563.34 : x
  2. Step 2: Convert to fraction form
    400,698.02/601,220.74 = 220,563.34/x
  3. Step 3: Cross multiply
    400,698.02x = 601,220.74 × 220,563.34
  4. Step 4: Simplify right side
    400,698.02x = 132,607,254,491.67
  5. Step 5: Solve for x
    x = 132,607,254,491.67/400,698.02
  6. Step 6: Final answer
    x = 330,940.63

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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.