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Finding the Fourth Proportional to 279,854.51, 386,199.36 and 158,996.00

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Solution

The fourth proportional to 279,854.51, 386,199.36 and 158,996.00 is: 219,414.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,854.51 : 386,199.36 = 158,996.00 : x
  2. Step 2: Convert to fraction form
    279,854.51/386,199.36 = 158,996.00/x
  3. Step 3: Cross multiply
    279,854.51x = 386,199.36 × 158,996.00
  4. Step 4: Simplify right side
    279,854.51x = 61,404,154,408.06
  5. Step 5: Solve for x
    x = 61,404,154,408.06/279,854.51
  6. Step 6: Final answer
    x = 219,414.56

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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.