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Finding the Fourth Proportional to 254,346.40, 381,579.54 and 76,854.88

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Solution

The fourth proportional to 254,346.40, 381,579.54 and 76,854.88 is: 115,300.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,346.40 : 381,579.54 = 76,854.88 : x
  2. Step 2: Convert to fraction form
    254,346.40/381,579.54 = 76,854.88/x
  3. Step 3: Cross multiply
    254,346.40x = 381,579.54 × 76,854.88
  4. Step 4: Simplify right side
    254,346.40x = 29,326,249,757.16
  5. Step 5: Solve for x
    x = 29,326,249,757.16/254,346.40
  6. Step 6: Final answer
    x = 115,300.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.