Home / 279,816.45-386,135.40-152,489.31

Finding the Fourth Proportional to 279,816.45, 386,135.40 and 152,489.31

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Solution

The fourth proportional to 279,816.45, 386,135.40 and 152,489.31 is: 210,429.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,816.45 : 386,135.40 = 152,489.31 : x
  2. Step 2: Convert to fraction form
    279,816.45/386,135.40 = 152,489.31/x
  3. Step 3: Cross multiply
    279,816.45x = 386,135.40 × 152,489.31
  4. Step 4: Simplify right side
    279,816.45x = 58,881,520,712.57
  5. Step 5: Solve for x
    x = 58,881,520,712.57/279,816.45
  6. Step 6: Final answer
    x = 210,429.09

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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.