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Finding the Fourth Proportional to 644,678.40, 967,017.42 and 201,446.40

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Solution

The fourth proportional to 644,678.40, 967,017.42 and 201,446.40 is: 302,169.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,678.40 : 967,017.42 = 201,446.40 : x
  2. Step 2: Convert to fraction form
    644,678.40/967,017.42 = 201,446.40/x
  3. Step 3: Cross multiply
    644,678.40x = 967,017.42 × 201,446.40
  4. Step 4: Simplify right side
    644,678.40x = 194,802,177,996.29
  5. Step 5: Solve for x
    x = 194,802,177,996.29/644,678.40
  6. Step 6: Final answer
    x = 302,169.54

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Similar ratio
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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.