Home / 311,757,980.71-430,208,508.40-170,628,912.54

Finding the Fourth Proportional to 311,757,980.71, 430,208,508.40 and 170,628,912.54

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Solution

The fourth proportional to 311,757,980.71, 430,208,508.40 and 170,628,912.54 is: 235,458,318.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,757,980.71 : 430,208,508.40 = 170,628,912.54 : x
  2. Step 2: Convert to fraction form
    311,757,980.71/430,208,508.40 = 170,628,912.54/x
  3. Step 3: Cross multiply
    311,757,980.71x = 430,208,508.40 × 170,628,912.54
  4. Step 4: Simplify right side
    311,757,980.71x = 73,406,009,953,747,440
  5. Step 5: Solve for x
    x = 73,406,009,953,747,440/311,757,980.71
  6. Step 6: Final answer
    x = 235,458,318.62

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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.