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Finding the Fourth Proportional to 291,099.98, 436,649.92 and 80,737.94

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Solution

The fourth proportional to 291,099.98, 436,649.92 and 80,737.94 is: 121,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,099.98 : 436,649.92 = 80,737.94 : x
  2. Step 2: Convert to fraction form
    291,099.98/436,649.92 = 80,737.94/x
  3. Step 3: Cross multiply
    291,099.98x = 436,649.92 × 80,737.94
  4. Step 4: Simplify right side
    291,099.98x = 35,254,215,041.96
  5. Step 5: Solve for x
    x = 35,254,215,041.96/291,099.98
  6. Step 6: Final answer
    x = 121,106.90

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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.