Home / 393,677,113.10-543,263,890.47-217,461,315.92

Finding the Fourth Proportional to 393,677,113.10, 543,263,890.47 and 217,461,315.92

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Solution

The fourth proportional to 393,677,113.10, 543,263,890.47 and 217,461,315.92 is: 300,090,801.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,677,113.10 : 543,263,890.47 = 217,461,315.92 : x
  2. Step 2: Convert to fraction form
    393,677,113.10/543,263,890.47 = 217,461,315.92/x
  3. Step 3: Cross multiply
    393,677,113.10x = 543,263,890.47 × 217,461,315.92
  4. Step 4: Simplify right side
    393,677,113.10x = 118,138,880,513,424,944
  5. Step 5: Solve for x
    x = 118,138,880,513,424,944/393,677,113.10
  6. Step 6: Final answer
    x = 300,090,801.78

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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.