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Finding the Fourth Proportional to 492,000.40, 738,173.40 and 211,603.60

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Solution

The fourth proportional to 492,000.40, 738,173.40 and 211,603.60 is: 317,479.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,000.40 : 738,173.40 = 211,603.60 : x
  2. Step 2: Convert to fraction form
    492,000.40/738,173.40 = 211,603.60/x
  3. Step 3: Cross multiply
    492,000.40x = 738,173.40 × 211,603.60
  4. Step 4: Simplify right side
    492,000.40x = 156,200,148,864.24
  5. Step 5: Solve for x
    x = 156,200,148,864.24/492,000.40
  6. Step 6: Final answer
    x = 317,479.72

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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.