Home / 279,622.60-385,845.78-158,720.20

Finding the Fourth Proportional to 279,622.60, 385,845.78 and 158,720.20

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Solution

The fourth proportional to 279,622.60, 385,845.78 and 158,720.20 is: 219,014.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,622.60 : 385,845.78 = 158,720.20 : x
  2. Step 2: Convert to fraction form
    279,622.60/385,845.78 = 158,720.20/x
  3. Step 3: Cross multiply
    279,622.60x = 385,845.78 × 158,720.20
  4. Step 4: Simplify right side
    279,622.60x = 61,241,519,370.76
  5. Step 5: Solve for x
    x = 61,241,519,370.76/279,622.60
  6. Step 6: Final answer
    x = 219,014.91

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1.5x scale

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.