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Finding the Fourth Proportional to 313,972.40, 470,958.60 and 290,010.80

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Solution

The fourth proportional to 313,972.40, 470,958.60 and 290,010.80 is: 435,016.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,972.40 : 470,958.60 = 290,010.80 : x
  2. Step 2: Convert to fraction form
    313,972.40/470,958.60 = 290,010.80/x
  3. Step 3: Cross multiply
    313,972.40x = 470,958.60 × 290,010.80
  4. Step 4: Simplify right side
    313,972.40x = 136,583,080,352.88
  5. Step 5: Solve for x
    x = 136,583,080,352.88/313,972.40
  6. Step 6: Final answer
    x = 435,016.20

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1.5x scale

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.