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Finding the Fourth Proportional to 279,763.82, 386,074 and 152,439.32

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Solution

The fourth proportional to 279,763.82, 386,074 and 152,439.32 is: 210,366.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,763.82 : 386,074 = 152,439.32 : x
  2. Step 2: Convert to fraction form
    279,763.82/386,074 = 152,439.32/x
  3. Step 3: Cross multiply
    279,763.82x = 386,074 × 152,439.32
  4. Step 4: Simplify right side
    279,763.82x = 58,852,858,029.68
  5. Step 5: Solve for x
    x = 58,852,858,029.68/279,763.82
  6. Step 6: Final answer
    x = 210,366.22

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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.