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Finding the Fourth Proportional to 279,795.87, 386,118.32 and 152,471.43

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Solution

The fourth proportional to 279,795.87, 386,118.32 and 152,471.43 is: 210,410.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,795.87 : 386,118.32 = 152,471.43 : x
  2. Step 2: Convert to fraction form
    279,795.87/386,118.32 = 152,471.43/x
  3. Step 3: Cross multiply
    279,795.87x = 386,118.32 × 152,471.43
  4. Step 4: Simplify right side
    279,795.87x = 58,872,012,399.60
  5. Step 5: Solve for x
    x = 58,872,012,399.60/279,795.87
  6. Step 6: Final answer
    x = 210,410.58

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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.