Home / 247,621.20-371,431.80-129,328.80

Finding the Fourth Proportional to 247,621.20, 371,431.80 and 129,328.80

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Solution

The fourth proportional to 247,621.20, 371,431.80 and 129,328.80 is: 193,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,621.20 : 371,431.80 = 129,328.80 : x
  2. Step 2: Convert to fraction form
    247,621.20/371,431.80 = 129,328.80/x
  3. Step 3: Cross multiply
    247,621.20x = 371,431.80 × 129,328.80
  4. Step 4: Simplify right side
    247,621.20x = 48,036,828,975.84
  5. Step 5: Solve for x
    x = 48,036,828,975.84/247,621.20
  6. Step 6: Final answer
    x = 193,993.20

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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.