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Finding the Fourth Proportional to 279,854.44, 386,207.28 and 152,538.28

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Solution

The fourth proportional to 279,854.44, 386,207.28 and 152,538.28 is: 210,507.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,854.44 : 386,207.28 = 152,538.28 : x
  2. Step 2: Convert to fraction form
    279,854.44/386,207.28 = 152,538.28/x
  3. Step 3: Cross multiply
    279,854.44x = 386,207.28 × 152,538.28
  4. Step 4: Simplify right side
    279,854.44x = 58,911,394,214.68
  5. Step 5: Solve for x
    x = 58,911,394,214.68/279,854.44
  6. Step 6: Final answer
    x = 210,507.27

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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.