Home / 393,684,018.90-543,273,416.34-217,468,221.64

Finding the Fourth Proportional to 393,684,018.90, 543,273,416.34 and 217,468,221.64

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Solution

The fourth proportional to 393,684,018.90, 543,273,416.34 and 217,468,221.64 is: 300,100,329.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,684,018.90 : 543,273,416.34 = 217,468,221.64 : x
  2. Step 2: Convert to fraction form
    393,684,018.90/543,273,416.34 = 217,468,221.64/x
  3. Step 3: Cross multiply
    393,684,018.90x = 543,273,416.34 × 217,468,221.64
  4. Step 4: Simplify right side
    393,684,018.90x = 118,144,703,715,747,120
  5. Step 5: Solve for x
    x = 118,144,703,715,747,120/393,684,018.90
  6. Step 6: Final answer
    x = 300,100,329.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.