Home / 388,421,920.20-582,856,829.10-146,258,617.80

Finding the Fourth Proportional to 388,421,920.20, 582,856,829.10 and 146,258,617.80

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Solution

The fourth proportional to 388,421,920.20, 582,856,829.10 and 146,258,617.80 is: 219,472,253.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,421,920.20 : 582,856,829.10 = 146,258,617.80 : x
  2. Step 2: Convert to fraction form
    388,421,920.20/582,856,829.10 = 146,258,617.80/x
  3. Step 3: Cross multiply
    388,421,920.20x = 582,856,829.10 × 146,258,617.80
  4. Step 4: Simplify right side
    388,421,920.20x = 85,247,834,199,456,832
  5. Step 5: Solve for x
    x = 85,247,834,199,456,832/388,421,920.20
  6. Step 6: Final answer
    x = 219,472,253.67

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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.