Home / 210,382.31-315,589.97-70,140.94

Finding the Fourth Proportional to 210,382.31, 315,589.97 and 70,140.94

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Solution

The fourth proportional to 210,382.31, 315,589.97 and 70,140.94 is: 105,216.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,382.31 : 315,589.97 = 70,140.94 : x
  2. Step 2: Convert to fraction form
    210,382.31/315,589.97 = 70,140.94/x
  3. Step 3: Cross multiply
    210,382.31x = 315,589.97 × 70,140.94
  4. Step 4: Simplify right side
    210,382.31x = 22,135,776,536.75
  5. Step 5: Solve for x
    x = 22,135,776,536.75/210,382.31
  6. Step 6: Final answer
    x = 105,216.91

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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.