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Finding the Fourth Proportional to 310,903,520.80, 466,142,704.80 and 147,219,692.80

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Solution

The fourth proportional to 310,903,520.80, 466,142,704.80 and 147,219,692.80 is: 220,728,879.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,903,520.80 : 466,142,704.80 = 147,219,692.80 : x
  2. Step 2: Convert to fraction form
    310,903,520.80/466,142,704.80 = 147,219,692.80/x
  3. Step 3: Cross multiply
    310,903,520.80x = 466,142,704.80 × 147,219,692.80
  4. Step 4: Simplify right side
    310,903,520.80x = 68,625,385,801,617,096
  5. Step 5: Solve for x
    x = 68,625,385,801,617,096/310,903,520.80
  6. Step 6: Final answer
    x = 220,728,879.57

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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.