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Finding the Fourth Proportional to 310,880.20, 465,974.70 and 170,739.40

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Solution

The fourth proportional to 310,880.20, 465,974.70 and 170,739.40 is: 255,919.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,880.20 : 465,974.70 = 170,739.40 : x
  2. Step 2: Convert to fraction form
    310,880.20/465,974.70 = 170,739.40/x
  3. Step 3: Cross multiply
    310,880.20x = 465,974.70 × 170,739.40
  4. Step 4: Simplify right side
    310,880.20x = 79,560,240,693.18
  5. Step 5: Solve for x
    x = 79,560,240,693.18/310,880.20
  6. Step 6: Final answer
    x = 255,919.29

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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.