Home / 290,328,136.80-435,492,205.20-256,315,912.80

Finding the Fourth Proportional to 290,328,136.80, 435,492,205.20 and 256,315,912.80

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Solution

The fourth proportional to 290,328,136.80, 435,492,205.20 and 256,315,912.80 is: 384,473,869.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,328,136.80 : 435,492,205.20 = 256,315,912.80 : x
  2. Step 2: Convert to fraction form
    290,328,136.80/435,492,205.20 = 256,315,912.80/x
  3. Step 3: Cross multiply
    290,328,136.80x = 435,492,205.20 × 256,315,912.80
  4. Step 4: Simplify right side
    290,328,136.80x = 111,623,582,093,122,912
  5. Step 5: Solve for x
    x = 111,623,582,093,122,912/290,328,136.80
  6. Step 6: Final answer
    x = 384,473,869.20

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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.