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Finding the Fourth Proportional to 386,706,998.09, 580,054,813.62 and 95,574,145.88

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Solution

The fourth proportional to 386,706,998.09, 580,054,813.62 and 95,574,145.88 is: 143,359,814.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,706,998.09 : 580,054,813.62 = 95,574,145.88 : x
  2. Step 2: Convert to fraction form
    386,706,998.09/580,054,813.62 = 95,574,145.88/x
  3. Step 3: Cross multiply
    386,706,998.09x = 580,054,813.62 × 95,574,145.88
  4. Step 4: Simplify right side
    386,706,998.09x = 55,438,243,372,413,816
  5. Step 5: Solve for x
    x = 55,438,243,372,413,816/386,706,998.09
  6. Step 6: Final answer
    x = 143,359,814.14

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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.