Home / 282,437,989.08-389,870,153.58-212,076,856.80

Finding the Fourth Proportional to 282,437,989.08, 389,870,153.58 and 212,076,856.80

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Solution

The fourth proportional to 282,437,989.08, 389,870,153.58 and 212,076,856.80 is: 292,745,451.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,437,989.08 : 389,870,153.58 = 212,076,856.80 : x
  2. Step 2: Convert to fraction form
    282,437,989.08/389,870,153.58 = 212,076,856.80/x
  3. Step 3: Cross multiply
    282,437,989.08x = 389,870,153.58 × 212,076,856.80
  4. Step 4: Simplify right side
    282,437,989.08x = 82,682,436,731,379,664
  5. Step 5: Solve for x
    x = 82,682,436,731,379,664/282,437,989.08
  6. Step 6: Final answer
    x = 292,745,451.84

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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.