Home / 685,281.95-1,028,156.43-205,521.38

Finding the Fourth Proportional to 685,281.95, 1,028,156.43 and 205,521.38

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Solution

The fourth proportional to 685,281.95, 1,028,156.43 and 205,521.38 is: 308,352.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,281.95 : 1,028,156.43 = 205,521.38 : x
  2. Step 2: Convert to fraction form
    685,281.95/1,028,156.43 = 205,521.38/x
  3. Step 3: Cross multiply
    685,281.95x = 1,028,156.43 × 205,521.38
  4. Step 4: Simplify right side
    685,281.95x = 211,308,122,181.08
  5. Step 5: Solve for x
    x = 211,308,122,181.08/685,281.95
  6. Step 6: Final answer
    x = 308,352.09

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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.