Home / 317,986.80-476,980.20-107,621.70

Finding the Fourth Proportional to 317,986.80, 476,980.20 and 107,621.70

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Solution

The fourth proportional to 317,986.80, 476,980.20 and 107,621.70 is: 161,432.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,986.80 : 476,980.20 = 107,621.70 : x
  2. Step 2: Convert to fraction form
    317,986.80/476,980.20 = 107,621.70/x
  3. Step 3: Cross multiply
    317,986.80x = 476,980.20 × 107,621.70
  4. Step 4: Simplify right side
    317,986.80x = 51,333,419,990.34
  5. Step 5: Solve for x
    x = 51,333,419,990.34/317,986.80
  6. Step 6: Final answer
    x = 161,432.55

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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.