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Finding the Fourth Proportional to 485,358.94, 728,038.41 and 148,399.60

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Solution

The fourth proportional to 485,358.94, 728,038.41 and 148,399.60 is: 222,599.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,358.94 : 728,038.41 = 148,399.60 : x
  2. Step 2: Convert to fraction form
    485,358.94/728,038.41 = 148,399.60/x
  3. Step 3: Cross multiply
    485,358.94x = 728,038.41 × 148,399.60
  4. Step 4: Simplify right side
    485,358.94x = 108,040,608,828.64
  5. Step 5: Solve for x
    x = 108,040,608,828.64/485,358.94
  6. Step 6: Final answer
    x = 222,599.40

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Similar ratio
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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.