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Finding the Fourth Proportional to 279,910.51, 386,276.51 and 152,586.20

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Solution

The fourth proportional to 279,910.51, 386,276.51 and 152,586.20 is: 210,568.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,910.51 : 386,276.51 = 152,586.20 : x
  2. Step 2: Convert to fraction form
    279,910.51/386,276.51 = 152,586.20/x
  3. Step 3: Cross multiply
    279,910.51x = 386,276.51 × 152,586.20
  4. Step 4: Simplify right side
    279,910.51x = 58,940,464,810.16
  5. Step 5: Solve for x
    x = 58,940,464,810.16/279,910.51
  6. Step 6: Final answer
    x = 210,568.96

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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.