Home / 385,441,491.78-531,909,933.30-209,229,606.54

Finding the Fourth Proportional to 385,441,491.78, 531,909,933.30 and 209,229,606.54

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Solution

The fourth proportional to 385,441,491.78, 531,909,933.30 and 209,229,606.54 is: 288,737,223.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,441,491.78 : 531,909,933.30 = 209,229,606.54 : x
  2. Step 2: Convert to fraction form
    385,441,491.78/531,909,933.30 = 209,229,606.54/x
  3. Step 3: Cross multiply
    385,441,491.78x = 531,909,933.30 × 209,229,606.54
  4. Step 4: Simplify right side
    385,441,491.78x = 111,291,306,059,076,640
  5. Step 5: Solve for x
    x = 111,291,306,059,076,640/385,441,491.78
  6. Step 6: Final answer
    x = 288,737,223.24

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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.