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Finding the Fourth Proportional to 330,313.78, 455,833.47 and 179,410.78

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Solution

The fourth proportional to 330,313.78, 455,833.47 and 179,410.78 is: 247,587.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,313.78 : 455,833.47 = 179,410.78 : x
  2. Step 2: Convert to fraction form
    330,313.78/455,833.47 = 179,410.78/x
  3. Step 3: Cross multiply
    330,313.78x = 455,833.47 × 179,410.78
  4. Step 4: Simplify right side
    330,313.78x = 81,781,439,645.39
  5. Step 5: Solve for x
    x = 81,781,439,645.39/330,313.78
  6. Step 6: Final answer
    x = 247,587.13

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1.5x scale

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.