Home / 351,977.20-485,258.65-279,620.17

Finding the Fourth Proportional to 351,977.20, 485,258.65 and 279,620.17

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Solution

The fourth proportional to 351,977.20, 485,258.65 and 279,620.17 is: 385,502.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,977.20 : 485,258.65 = 279,620.17 : x
  2. Step 2: Convert to fraction form
    351,977.20/485,258.65 = 279,620.17/x
  3. Step 3: Cross multiply
    351,977.20x = 485,258.65 × 279,620.17
  4. Step 4: Simplify right side
    351,977.20x = 135,688,104,294.77
  5. Step 5: Solve for x
    x = 135,688,104,294.77/351,977.20
  6. Step 6: Final answer
    x = 385,502.54

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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.