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Finding the Fourth Proportional to 262,808,996.64, 394,214,823.59 and 68,720,838.54

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Solution

The fourth proportional to 262,808,996.64, 394,214,823.59 and 68,720,838.54 is: 103,081,605.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,808,996.64 : 394,214,823.59 = 68,720,838.54 : x
  2. Step 2: Convert to fraction form
    262,808,996.64/394,214,823.59 = 68,720,838.54/x
  3. Step 3: Cross multiply
    262,808,996.64x = 394,214,823.59 × 68,720,838.54
  4. Step 4: Simplify right side
    262,808,996.64x = 27,090,773,241,659,372
  5. Step 5: Solve for x
    x = 27,090,773,241,659,372/262,808,996.64
  6. Step 6: Final answer
    x = 103,081,605.23

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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.