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Finding the Fourth Proportional to 500,250.48, 690,271.28 and 303,915.04

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Solution

The fourth proportional to 500,250.48, 690,271.28 and 303,915.04 is: 419,357.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,250.48 : 690,271.28 = 303,915.04 : x
  2. Step 2: Convert to fraction form
    500,250.48/690,271.28 = 303,915.04/x
  3. Step 3: Cross multiply
    500,250.48x = 690,271.28 × 303,915.04
  4. Step 4: Simplify right side
    500,250.48x = 209,783,823,672.05
  5. Step 5: Solve for x
    x = 209,783,823,672.05/500,250.48
  6. Step 6: Final answer
    x = 419,357.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.