Home / 494,722.20-742,204.80-139,731.60

Finding the Fourth Proportional to 494,722.20, 742,204.80 and 139,731.60

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Solution

The fourth proportional to 494,722.20, 742,204.80 and 139,731.60 is: 209,631.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,722.20 : 742,204.80 = 139,731.60 : x
  2. Step 2: Convert to fraction form
    494,722.20/742,204.80 = 139,731.60/x
  3. Step 3: Cross multiply
    494,722.20x = 742,204.80 × 139,731.60
  4. Step 4: Simplify right side
    494,722.20x = 103,709,464,231.68
  5. Step 5: Solve for x
    x = 103,709,464,231.68/494,722.20
  6. Step 6: Final answer
    x = 209,631.72

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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.