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Finding the Fourth Proportional to 187,215,998.80, 280,320,113.40 and 187,215,998.80

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Solution

The fourth proportional to 187,215,998.80, 280,320,113.40 and 187,215,998.80 is: 280,320,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,215,998.80 : 280,320,113.40 = 187,215,998.80 : x
  2. Step 2: Convert to fraction form
    187,215,998.80/280,320,113.40 = 187,215,998.80/x
  3. Step 3: Cross multiply
    187,215,998.80x = 280,320,113.40 × 187,215,998.80
  4. Step 4: Simplify right side
    187,215,998.80x = 52,480,410,013,910,264
  5. Step 5: Solve for x
    x = 52,480,410,013,910,264/187,215,998.80
  6. Step 6: Final answer
    x = 280,320,113.40

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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.