Home / 210,243.60-315,365.40-131,446.80

Finding the Fourth Proportional to 210,243.60, 315,365.40 and 131,446.80

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Solution

The fourth proportional to 210,243.60, 315,365.40 and 131,446.80 is: 197,170.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,243.60 : 315,365.40 = 131,446.80 : x
  2. Step 2: Convert to fraction form
    210,243.60/315,365.40 = 131,446.80/x
  3. Step 3: Cross multiply
    210,243.60x = 315,365.40 × 131,446.80
  4. Step 4: Simplify right side
    210,243.60x = 41,453,772,660.72
  5. Step 5: Solve for x
    x = 41,453,772,660.72/210,243.60
  6. Step 6: Final answer
    x = 197,170.20

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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.