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Finding the Fourth Proportional to 487,991.94, 673,428.78 and 273,132

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Solution

The fourth proportional to 487,991.94, 673,428.78 and 273,132 is: 376,922.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,991.94 : 673,428.78 = 273,132 : x
  2. Step 2: Convert to fraction form
    487,991.94/673,428.78 = 273,132/x
  3. Step 3: Cross multiply
    487,991.94x = 673,428.78 × 273,132
  4. Step 4: Simplify right side
    487,991.94x = 183,934,949,538.96
  5. Step 5: Solve for x
    x = 183,934,949,538.96/487,991.94
  6. Step 6: Final answer
    x = 376,922.11

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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.