Home / 494,731.20-742,218.30-139,740.60

Finding the Fourth Proportional to 494,731.20, 742,218.30 and 139,740.60

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Solution

The fourth proportional to 494,731.20, 742,218.30 and 139,740.60 is: 209,645.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,731.20 : 742,218.30 = 139,740.60 : x
  2. Step 2: Convert to fraction form
    494,731.20/742,218.30 = 139,740.60/x
  3. Step 3: Cross multiply
    494,731.20x = 742,218.30 × 139,740.60
  4. Step 4: Simplify right side
    494,731.20x = 103,718,030,572.98
  5. Step 5: Solve for x
    x = 103,718,030,572.98/494,731.20
  6. Step 6: Final answer
    x = 209,645.22

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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.