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Finding the Fourth Proportional to 496,903.28, 685,675.02 and 279,136.40

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Solution

The fourth proportional to 496,903.28, 685,675.02 and 279,136.40 is: 385,179.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,903.28 : 685,675.02 = 279,136.40 : x
  2. Step 2: Convert to fraction form
    496,903.28/685,675.02 = 279,136.40/x
  3. Step 3: Cross multiply
    496,903.28x = 685,675.02 × 279,136.40
  4. Step 4: Simplify right side
    496,903.28x = 191,396,854,271.11
  5. Step 5: Solve for x
    x = 191,396,854,271.11/496,903.28
  6. Step 6: Final answer
    x = 385,179.30

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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.