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Finding the Fourth Proportional to 279,466.96, 385,672.44 and 152,144.68

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Solution

The fourth proportional to 279,466.96, 385,672.44 and 152,144.68 is: 209,964.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,466.96 : 385,672.44 = 152,144.68 : x
  2. Step 2: Convert to fraction form
    279,466.96/385,672.44 = 152,144.68/x
  3. Step 3: Cross multiply
    279,466.96x = 385,672.44 × 152,144.68
  4. Step 4: Simplify right side
    279,466.96x = 58,678,009,968.62
  5. Step 5: Solve for x
    x = 58,678,009,968.62/279,466.96
  6. Step 6: Final answer
    x = 209,964.03

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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.