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Finding the Fourth Proportional to 279,351.66, 385,513.36 and 152,035.32

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Solution

The fourth proportional to 279,351.66, 385,513.36 and 152,035.32 is: 209,813.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,351.66 : 385,513.36 = 152,035.32 : x
  2. Step 2: Convert to fraction form
    279,351.66/385,513.36 = 152,035.32/x
  3. Step 3: Cross multiply
    279,351.66x = 385,513.36 × 152,035.32
  4. Step 4: Simplify right side
    279,351.66x = 58,611,647,051.88
  5. Step 5: Solve for x
    x = 58,611,647,051.88/279,351.66
  6. Step 6: Final answer
    x = 209,813.13

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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.