Home / 311,733.16-430,188.70-173,913.28

Finding the Fourth Proportional to 311,733.16, 430,188.70 and 173,913.28

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Solution

The fourth proportional to 311,733.16, 430,188.70 and 173,913.28 is: 239,998.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,733.16 : 430,188.70 = 173,913.28 : x
  2. Step 2: Convert to fraction form
    311,733.16/430,188.70 = 173,913.28/x
  3. Step 3: Cross multiply
    311,733.16x = 430,188.70 × 173,913.28
  4. Step 4: Simplify right side
    311,733.16x = 74,815,527,835.94
  5. Step 5: Solve for x
    x = 74,815,527,835.94/311,733.16
  6. Step 6: Final answer
    x = 239,998.62

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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.