Home / 388,044,492.80-582,147,609.60-129,340,083.20

Finding the Fourth Proportional to 388,044,492.80, 582,147,609.60 and 129,340,083.20

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Solution

The fourth proportional to 388,044,492.80, 582,147,609.60 and 129,340,083.20 is: 194,037,079.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,044,492.80 : 582,147,609.60 = 129,340,083.20 : x
  2. Step 2: Convert to fraction form
    388,044,492.80/582,147,609.60 = 129,340,083.20/x
  3. Step 3: Cross multiply
    388,044,492.80x = 582,147,609.60 × 129,340,083.20
  4. Step 4: Simplify right side
    388,044,492.80x = 75,295,020,260,345,120
  5. Step 5: Solve for x
    x = 75,295,020,260,345,120/388,044,492.80
  6. Step 6: Final answer
    x = 194,037,079.92

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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.