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Finding the Fourth Proportional to 279,786.66, 386,105.64 and 152,462.25

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Solution

The fourth proportional to 279,786.66, 386,105.64 and 152,462.25 is: 210,397.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,786.66 : 386,105.64 = 152,462.25 : x
  2. Step 2: Convert to fraction form
    279,786.66/386,105.64 = 152,462.25/x
  3. Step 3: Cross multiply
    279,786.66x = 386,105.64 × 152,462.25
  4. Step 4: Simplify right side
    279,786.66x = 58,866,534,040.36
  5. Step 5: Solve for x
    x = 58,866,534,040.36/279,786.66
  6. Step 6: Final answer
    x = 210,397.93

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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.