Home / 385,859.40-578,594.70-228,136.20

Finding the Fourth Proportional to 385,859.40, 578,594.70 and 228,136.20

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Solution

The fourth proportional to 385,859.40, 578,594.70 and 228,136.20 is: 342,089.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,859.40 : 578,594.70 = 228,136.20 : x
  2. Step 2: Convert to fraction form
    385,859.40/578,594.70 = 228,136.20/x
  3. Step 3: Cross multiply
    385,859.40x = 578,594.70 × 228,136.20
  4. Step 4: Simplify right side
    385,859.40x = 131,998,396,198.14
  5. Step 5: Solve for x
    x = 131,998,396,198.14/385,859.40
  6. Step 6: Final answer
    x = 342,089.36

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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.