Home / 389,086.40-583,629.60-108,603.20

Finding the Fourth Proportional to 389,086.40, 583,629.60 and 108,603.20

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Solution

The fourth proportional to 389,086.40, 583,629.60 and 108,603.20 is: 162,904.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,086.40 : 583,629.60 = 108,603.20 : x
  2. Step 2: Convert to fraction form
    389,086.40/583,629.60 = 108,603.20/x
  3. Step 3: Cross multiply
    389,086.40x = 583,629.60 × 108,603.20
  4. Step 4: Simplify right side
    389,086.40x = 63,384,042,174.72
  5. Step 5: Solve for x
    x = 63,384,042,174.72/389,086.40
  6. Step 6: Final answer
    x = 162,904.80

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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.