Home / 312,439.24-430,926.94-215,804.81

Finding the Fourth Proportional to 312,439.24, 430,926.94 and 215,804.81

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Solution

The fourth proportional to 312,439.24, 430,926.94 and 215,804.81 is: 297,645.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,439.24 : 430,926.94 = 215,804.81 : x
  2. Step 2: Convert to fraction form
    312,439.24/430,926.94 = 215,804.81/x
  3. Step 3: Cross multiply
    312,439.24x = 430,926.94 × 215,804.81
  4. Step 4: Simplify right side
    312,439.24x = 92,996,105,331.56
  5. Step 5: Solve for x
    x = 92,996,105,331.56/312,439.24
  6. Step 6: Final answer
    x = 297,645.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.