Home / 207,953,921.80-311,930,882.70-191,829,608.20

Finding the Fourth Proportional to 207,953,921.80, 311,930,882.70 and 191,829,608.20

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Solution

The fourth proportional to 207,953,921.80, 311,930,882.70 and 191,829,608.20 is: 287,744,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,953,921.80 : 311,930,882.70 = 191,829,608.20 : x
  2. Step 2: Convert to fraction form
    207,953,921.80/311,930,882.70 = 191,829,608.20/x
  3. Step 3: Cross multiply
    207,953,921.80x = 311,930,882.70 × 191,829,608.20
  4. Step 4: Simplify right side
    207,953,921.80x = 59,837,579,013,821,152
  5. Step 5: Solve for x
    x = 59,837,579,013,821,152/207,953,921.80
  6. Step 6: Final answer
    x = 287,744,412.30

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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.