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Finding the Fourth Proportional to 279,757.09, 386,053.95 and 152,433.64

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Solution

The fourth proportional to 279,757.09, 386,053.95 and 152,433.64 is: 210,352.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,757.09 : 386,053.95 = 152,433.64 : x
  2. Step 2: Convert to fraction form
    279,757.09/386,053.95 = 152,433.64/x
  3. Step 3: Cross multiply
    279,757.09x = 386,053.95 × 152,433.64
  4. Step 4: Simplify right side
    279,757.09x = 58,847,608,834.88
  5. Step 5: Solve for x
    x = 58,847,608,834.88/279,757.09
  6. Step 6: Final answer
    x = 210,352.52

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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.