Home / 210,231.20-315,346.80-131,434.40

Finding the Fourth Proportional to 210,231.20, 315,346.80 and 131,434.40

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Solution

The fourth proportional to 210,231.20, 315,346.80 and 131,434.40 is: 197,151.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,231.20 : 315,346.80 = 131,434.40 : x
  2. Step 2: Convert to fraction form
    210,231.20/315,346.80 = 131,434.40/x
  3. Step 3: Cross multiply
    210,231.20x = 315,346.80 × 131,434.40
  4. Step 4: Simplify right side
    210,231.20x = 41,447,417,449.92
  5. Step 5: Solve for x
    x = 41,447,417,449.92/210,231.20
  6. Step 6: Final answer
    x = 197,151.60

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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.