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Finding the Fourth Proportional to 644,679.90, 967,019.67 and 201,447.90

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Solution

The fourth proportional to 644,679.90, 967,019.67 and 201,447.90 is: 302,171.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,679.90 : 967,019.67 = 201,447.90 : x
  2. Step 2: Convert to fraction form
    644,679.90/967,019.67 = 201,447.90/x
  3. Step 3: Cross multiply
    644,679.90x = 967,019.67 × 201,447.90
  4. Step 4: Simplify right side
    644,679.90x = 194,804,081,780.19
  5. Step 5: Solve for x
    x = 194,804,081,780.19/644,679.90
  6. Step 6: Final answer
    x = 302,171.79

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1.5x scale

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.