Home / 209,087,997.20-313,631,995.80-187,169,008.40

Finding the Fourth Proportional to 209,087,997.20, 313,631,995.80 and 187,169,008.40

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Solution

The fourth proportional to 209,087,997.20, 313,631,995.80 and 187,169,008.40 is: 280,753,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,087,997.20 : 313,631,995.80 = 187,169,008.40 : x
  2. Step 2: Convert to fraction form
    209,087,997.20/313,631,995.80 = 187,169,008.40/x
  3. Step 3: Cross multiply
    209,087,997.20x = 313,631,995.80 × 187,169,008.40
  4. Step 4: Simplify right side
    209,087,997.20x = 58,702,189,656,398,968
  5. Step 5: Solve for x
    x = 58,702,189,656,398,968/209,087,997.20
  6. Step 6: Final answer
    x = 280,753,512.60

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1.5x scale

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.