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Finding the Fourth Proportional to 187,212,648.30, 280,315,087.65 and 187,212,648.30

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Solution

The fourth proportional to 187,212,648.30, 280,315,087.65 and 187,212,648.30 is: 280,315,087.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,212,648.30 : 280,315,087.65 = 187,212,648.30 : x
  2. Step 2: Convert to fraction form
    187,212,648.30/280,315,087.65 = 187,212,648.30/x
  3. Step 3: Cross multiply
    187,212,648.30x = 280,315,087.65 × 187,212,648.30
  4. Step 4: Simplify right side
    187,212,648.30x = 52,478,529,917,403,120
  5. Step 5: Solve for x
    x = 52,478,529,917,403,120/187,212,648.30
  6. Step 6: Final answer
    x = 280,315,087.65

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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.