Home / 385,621.20-578,518.20-148,942.80

Finding the Fourth Proportional to 385,621.20, 578,518.20 and 148,942.80

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Solution

The fourth proportional to 385,621.20, 578,518.20 and 148,942.80 is: 223,447.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,621.20 : 578,518.20 = 148,942.80 : x
  2. Step 2: Convert to fraction form
    385,621.20/578,518.20 = 148,942.80/x
  3. Step 3: Cross multiply
    385,621.20x = 578,518.20 × 148,942.80
  4. Step 4: Simplify right side
    385,621.20x = 86,166,120,558.96
  5. Step 5: Solve for x
    x = 86,166,120,558.96/385,621.20
  6. Step 6: Final answer
    x = 223,447.57

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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.