Home / 279,515.13-385,735.56-158,660.15

Finding the Fourth Proportional to 279,515.13, 385,735.56 and 158,660.15

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Solution

The fourth proportional to 279,515.13, 385,735.56 and 158,660.15 is: 218,953.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,515.13 : 385,735.56 = 158,660.15 : x
  2. Step 2: Convert to fraction form
    279,515.13/385,735.56 = 158,660.15/x
  3. Step 3: Cross multiply
    279,515.13x = 385,735.56 × 158,660.15
  4. Step 4: Simplify right side
    279,515.13x = 61,200,859,881.26
  5. Step 5: Solve for x
    x = 61,200,859,881.26/279,515.13
  6. Step 6: Final answer
    x = 218,953.66

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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.