Home / 393,677,112.60-543,263,889.78-217,461,315.42

Finding the Fourth Proportional to 393,677,112.60, 543,263,889.78 and 217,461,315.42

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Solution

The fourth proportional to 393,677,112.60, 543,263,889.78 and 217,461,315.42 is: 300,090,801.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,677,112.60 : 543,263,889.78 = 217,461,315.42 : x
  2. Step 2: Convert to fraction form
    393,677,112.60/543,263,889.78 = 217,461,315.42/x
  3. Step 3: Cross multiply
    393,677,112.60x = 543,263,889.78 × 217,461,315.42
  4. Step 4: Simplify right side
    393,677,112.60x = 118,138,880,091,744,688
  5. Step 5: Solve for x
    x = 118,138,880,091,744,688/393,677,112.60
  6. Step 6: Final answer
    x = 300,090,801.09

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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.