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Finding the Fourth Proportional to 279,910.76, 386,276.85 and 152,586.45

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Solution

The fourth proportional to 279,910.76, 386,276.85 and 152,586.45 is: 210,569.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,910.76 : 386,276.85 = 152,586.45 : x
  2. Step 2: Convert to fraction form
    279,910.76/386,276.85 = 152,586.45/x
  3. Step 3: Cross multiply
    279,910.76x = 386,276.85 × 152,586.45
  4. Step 4: Simplify right side
    279,910.76x = 58,940,613,258.68
  5. Step 5: Solve for x
    x = 58,940,613,258.68/279,910.76
  6. Step 6: Final answer
    x = 210,569.31

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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.