Home / 210,486.12-315,733.50-70,245.96

Finding the Fourth Proportional to 210,486.12, 315,733.50 and 70,245.96

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Solution

The fourth proportional to 210,486.12, 315,733.50 and 70,245.96 is: 105,370.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,486.12 : 315,733.50 = 70,245.96 : x
  2. Step 2: Convert to fraction form
    210,486.12/315,733.50 = 70,245.96/x
  3. Step 3: Cross multiply
    210,486.12x = 315,733.50 × 70,245.96
  4. Step 4: Simplify right side
    210,486.12x = 22,179,002,811.66
  5. Step 5: Solve for x
    x = 22,179,002,811.66/210,486.12
  6. Step 6: Final answer
    x = 105,370.38

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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.