Home / 385,365,247.29-531,804,567.89-209,153,245.37

Finding the Fourth Proportional to 385,365,247.29, 531,804,567.89 and 209,153,245.37

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Solution

The fourth proportional to 385,365,247.29, 531,804,567.89 and 209,153,245.37 is: 288,631,764.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,365,247.29 : 531,804,567.89 = 209,153,245.37 : x
  2. Step 2: Convert to fraction form
    385,365,247.29/531,804,567.89 = 209,153,245.37/x
  3. Step 3: Cross multiply
    385,365,247.29x = 531,804,567.89 × 209,153,245.37
  4. Step 4: Simplify right side
    385,365,247.29x = 111,228,651,274,647,856
  5. Step 5: Solve for x
    x = 111,228,651,274,647,856/385,365,247.29
  6. Step 6: Final answer
    x = 288,631,764.43

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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.