Home / 388,421,919.20-582,856,827.60-146,258,616.80

Finding the Fourth Proportional to 388,421,919.20, 582,856,827.60 and 146,258,616.80

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Solution

The fourth proportional to 388,421,919.20, 582,856,827.60 and 146,258,616.80 is: 219,472,252.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,421,919.20 : 582,856,827.60 = 146,258,616.80 : x
  2. Step 2: Convert to fraction form
    388,421,919.20/582,856,827.60 = 146,258,616.80/x
  3. Step 3: Cross multiply
    388,421,919.20x = 582,856,827.60 × 146,258,616.80
  4. Step 4: Simplify right side
    388,421,919.20x = 85,247,833,397,212,080
  5. Step 5: Solve for x
    x = 85,247,833,397,212,080/388,421,919.20
  6. Step 6: Final answer
    x = 219,472,252.17

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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.