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Finding the Fourth Proportional to 279,701.68, 385,998.24 and 158,839.60

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Solution

The fourth proportional to 279,701.68, 385,998.24 and 158,839.60 is: 219,204.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,701.68 : 385,998.24 = 158,839.60 : x
  2. Step 2: Convert to fraction form
    279,701.68/385,998.24 = 158,839.60/x
  3. Step 3: Cross multiply
    279,701.68x = 385,998.24 × 158,839.60
  4. Step 4: Simplify right side
    279,701.68x = 61,311,806,042.30
  5. Step 5: Solve for x
    x = 61,311,806,042.30/279,701.68
  6. Step 6: Final answer
    x = 219,204.28

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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.