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Finding the Fourth Proportional to 279,384.49, 385,539.15 and 158,523.18

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Solution

The fourth proportional to 279,384.49, 385,539.15 and 158,523.18 is: 218,755.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,384.49 : 385,539.15 = 158,523.18 : x
  2. Step 2: Convert to fraction form
    279,384.49/385,539.15 = 158,523.18/x
  3. Step 3: Cross multiply
    279,384.49x = 385,539.15 × 158,523.18
  4. Step 4: Simplify right side
    279,384.49x = 61,116,892,072.50
  5. Step 5: Solve for x
    x = 61,116,892,072.50/279,384.49
  6. Step 6: Final answer
    x = 218,755.49

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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.