Home / 212,621.40-318,494.70-146,136.60

Finding the Fourth Proportional to 212,621.40, 318,494.70 and 146,136.60

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Solution

The fourth proportional to 212,621.40, 318,494.70 and 146,136.60 is: 218,904.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,621.40 : 318,494.70 = 146,136.60 : x
  2. Step 2: Convert to fraction form
    212,621.40/318,494.70 = 146,136.60/x
  3. Step 3: Cross multiply
    212,621.40x = 318,494.70 × 146,136.60
  4. Step 4: Simplify right side
    212,621.40x = 46,543,732,576.02
  5. Step 5: Solve for x
    x = 46,543,732,576.02/212,621.40
  6. Step 6: Final answer
    x = 218,904.27

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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.