Home / 278,961.89-384,967.67-151,637.48

Finding the Fourth Proportional to 278,961.89, 384,967.67 and 151,637.48

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Solution

The fourth proportional to 278,961.89, 384,967.67 and 151,637.48 is: 209,259.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,961.89 : 384,967.67 = 151,637.48 : x
  2. Step 2: Convert to fraction form
    278,961.89/384,967.67 = 151,637.48/x
  3. Step 3: Cross multiply
    278,961.89x = 384,967.67 × 151,637.48
  4. Step 4: Simplify right side
    278,961.89x = 58,375,527,360.27
  5. Step 5: Solve for x
    x = 58,375,527,360.27/278,961.89
  6. Step 6: Final answer
    x = 209,259.86

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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.