Home / 278,638.49-384,517.73-151,315.00

Finding the Fourth Proportional to 278,638.49, 384,517.73 and 151,315.00

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Solution

The fourth proportional to 278,638.49, 384,517.73 and 151,315.00 is: 208,812.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,638.49 : 384,517.73 = 151,315.00 : x
  2. Step 2: Convert to fraction form
    278,638.49/384,517.73 = 151,315.00/x
  3. Step 3: Cross multiply
    278,638.49x = 384,517.73 × 151,315.00
  4. Step 4: Simplify right side
    278,638.49x = 58,183,299,731.94
  5. Step 5: Solve for x
    x = 58,183,299,731.94/278,638.49
  6. Step 6: Final answer
    x = 208,812.86

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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.