Home / 213,586,235.07-320,391,685.32-82,429,191.15

Finding the Fourth Proportional to 213,586,235.07, 320,391,685.32 and 82,429,191.15

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Solution

The fourth proportional to 213,586,235.07, 320,391,685.32 and 82,429,191.15 is: 123,648,546.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,586,235.07 : 320,391,685.32 = 82,429,191.15 : x
  2. Step 2: Convert to fraction form
    213,586,235.07/320,391,685.32 = 82,429,191.15/x
  3. Step 3: Cross multiply
    213,586,235.07x = 320,391,685.32 × 82,429,191.15
  4. Step 4: Simplify right side
    213,586,235.07x = 26,409,627,472,112,932
  5. Step 5: Solve for x
    x = 26,409,627,472,112,932/213,586,235.07
  6. Step 6: Final answer
    x = 123,648,546.28

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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.