Home / 385,372,105.08-531,814,003-209,160,080.38

Finding the Fourth Proportional to 385,372,105.08, 531,814,003 and 209,160,080.38

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Solution

The fourth proportional to 385,372,105.08, 531,814,003 and 209,160,080.38 is: 288,641,181.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,372,105.08 : 531,814,003 = 209,160,080.38 : x
  2. Step 2: Convert to fraction form
    385,372,105.08/531,814,003 = 209,160,080.38/x
  3. Step 3: Cross multiply
    385,372,105.08x = 531,814,003 × 209,160,080.38
  4. Step 4: Simplify right side
    385,372,105.08x = 111,234,259,614,689,552
  5. Step 5: Solve for x
    x = 111,234,259,614,689,552/385,372,105.08
  6. Step 6: Final answer
    x = 288,641,181.21

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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.