Home / 385,595,003.12-578,391,243.11-139,951,310.54

Finding the Fourth Proportional to 385,595,003.12, 578,391,243.11 and 139,951,310.54

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Solution

The fourth proportional to 385,595,003.12, 578,391,243.11 and 139,951,310.54 is: 209,926,507.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,595,003.12 : 578,391,243.11 = 139,951,310.54 : x
  2. Step 2: Convert to fraction form
    385,595,003.12/578,391,243.11 = 139,951,310.54/x
  3. Step 3: Cross multiply
    385,595,003.12x = 578,391,243.11 × 139,951,310.54
  4. Step 4: Simplify right side
    385,595,003.12x = 80,946,612,477,404,480
  5. Step 5: Solve for x
    x = 80,946,612,477,404,480/385,595,003.12
  6. Step 6: Final answer
    x = 209,926,507.92

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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.