Home / 311,869.32-430,379.91-168,629.46

Finding the Fourth Proportional to 311,869.32, 430,379.91 and 168,629.46

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Solution

The fourth proportional to 311,869.32, 430,379.91 and 168,629.46 is: 232,708.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,869.32 : 430,379.91 = 168,629.46 : x
  2. Step 2: Convert to fraction form
    311,869.32/430,379.91 = 168,629.46/x
  3. Step 3: Cross multiply
    311,869.32x = 430,379.91 × 168,629.46
  4. Step 4: Simplify right side
    311,869.32x = 72,574,731,818.15
  5. Step 5: Solve for x
    x = 72,574,731,818.15/311,869.32
  6. Step 6: Final answer
    x = 232,708.79

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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.