Home / 273,060,661.40-409,644,136.20-78,978,408.20

Finding the Fourth Proportional to 273,060,661.40, 409,644,136.20 and 78,978,408.20

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Solution

The fourth proportional to 273,060,661.40, 409,644,136.20 and 78,978,408.20 is: 118,482,983.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,060,661.40 : 409,644,136.20 = 78,978,408.20 : x
  2. Step 2: Convert to fraction form
    273,060,661.40/409,644,136.20 = 78,978,408.20/x
  3. Step 3: Cross multiply
    273,060,661.40x = 409,644,136.20 × 78,978,408.20
  4. Step 4: Simplify right side
    273,060,661.40x = 32,353,041,805,539,996
  5. Step 5: Solve for x
    x = 32,353,041,805,539,996/273,060,661.40
  6. Step 6: Final answer
    x = 118,482,983.38

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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.