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Finding the Fourth Proportional to 605,870.20, 908,805.30 and 206,961.40

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Solution

The fourth proportional to 605,870.20, 908,805.30 and 206,961.40 is: 310,442.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,870.20 : 908,805.30 = 206,961.40 : x
  2. Step 2: Convert to fraction form
    605,870.20/908,805.30 = 206,961.40/x
  3. Step 3: Cross multiply
    605,870.20x = 908,805.30 × 206,961.40
  4. Step 4: Simplify right side
    605,870.20x = 188,087,617,215.42
  5. Step 5: Solve for x
    x = 188,087,617,215.42/605,870.20
  6. Step 6: Final answer
    x = 310,442.10

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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.