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Finding the Fourth Proportional to 279,321.44, 385,459.82 and 151,996.74

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Solution

The fourth proportional to 279,321.44, 385,459.82 and 151,996.74 is: 209,753.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,321.44 : 385,459.82 = 151,996.74 : x
  2. Step 2: Convert to fraction form
    279,321.44/385,459.82 = 151,996.74/x
  3. Step 3: Cross multiply
    279,321.44x = 385,459.82 × 151,996.74
  4. Step 4: Simplify right side
    279,321.44x = 58,588,636,040.99
  5. Step 5: Solve for x
    x = 58,588,636,040.99/279,321.44
  6. Step 6: Final answer
    x = 209,753.45

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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.