Home / 638,208.18-957,309.30-188,931.60

Finding the Fourth Proportional to 638,208.18, 957,309.30 and 188,931.60

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Solution

The fourth proportional to 638,208.18, 957,309.30 and 188,931.60 is: 283,396.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,208.18 : 957,309.30 = 188,931.60 : x
  2. Step 2: Convert to fraction form
    638,208.18/957,309.30 = 188,931.60/x
  3. Step 3: Cross multiply
    638,208.18x = 957,309.30 × 188,931.60
  4. Step 4: Simplify right side
    638,208.18x = 180,865,977,743.88
  5. Step 5: Solve for x
    x = 180,865,977,743.88/638,208.18
  6. Step 6: Final answer
    x = 283,396.52

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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.