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Finding the Fourth Proportional to 365,187,039.56, 503,664,262.92 and 321,039,645.20

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Solution

The fourth proportional to 365,187,039.56, 503,664,262.92 and 321,039,645.20 is: 442,776,382.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,187,039.56 : 503,664,262.92 = 321,039,645.20 : x
  2. Step 2: Convert to fraction form
    365,187,039.56/503,664,262.92 = 321,039,645.20/x
  3. Step 3: Cross multiply
    365,187,039.56x = 503,664,262.92 × 321,039,645.20
  4. Step 4: Simplify right side
    365,187,039.56x = 161,696,196,267,756,320
  5. Step 5: Solve for x
    x = 161,696,196,267,756,320/365,187,039.56
  6. Step 6: Final answer
    x = 442,776,382.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.