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Finding the Fourth Proportional to 377,428.92, 520,766.28 and 275,509.92

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Solution

The fourth proportional to 377,428.92, 520,766.28 and 275,509.92 is: 380,141.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,428.92 : 520,766.28 = 275,509.92 : x
  2. Step 2: Convert to fraction form
    377,428.92/520,766.28 = 275,509.92/x
  3. Step 3: Cross multiply
    377,428.92x = 520,766.28 × 275,509.92
  4. Step 4: Simplify right side
    377,428.92x = 143,476,276,141.50
  5. Step 5: Solve for x
    x = 143,476,276,141.50/377,428.92
  6. Step 6: Final answer
    x = 380,141.18

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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.