Home / 217,631,256.40-326,021,731.80-131,112,661.60

Finding the Fourth Proportional to 217,631,256.40, 326,021,731.80 and 131,112,661.60

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Solution

The fourth proportional to 217,631,256.40, 326,021,731.80 and 131,112,661.60 is: 196,412,857.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,631,256.40 : 326,021,731.80 = 131,112,661.60 : x
  2. Step 2: Convert to fraction form
    217,631,256.40/326,021,731.80 = 131,112,661.60/x
  3. Step 3: Cross multiply
    217,631,256.40x = 326,021,731.80 × 131,112,661.60
  4. Step 4: Simplify right side
    217,631,256.40x = 42,745,576,995,739,360
  5. Step 5: Solve for x
    x = 42,745,576,995,739,360/217,631,256.40
  6. Step 6: Final answer
    x = 196,412,857.71

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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.