Home / 428,997.69-643,497.32-176,101.92

Finding the Fourth Proportional to 428,997.69, 643,497.32 and 176,101.92

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Solution

The fourth proportional to 428,997.69, 643,497.32 and 176,101.92 is: 264,153.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,997.69 : 643,497.32 = 176,101.92 : x
  2. Step 2: Convert to fraction form
    428,997.69/643,497.32 = 176,101.92/x
  3. Step 3: Cross multiply
    428,997.69x = 643,497.32 × 176,101.92
  4. Step 4: Simplify right side
    428,997.69x = 113,321,114,007.11
  5. Step 5: Solve for x
    x = 113,321,114,007.11/428,997.69
  6. Step 6: Final answer
    x = 264,153.20

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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.