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Finding the Fourth Proportional to 395,124.30, 545,212.83 and 239,994.84

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Solution

The fourth proportional to 395,124.30, 545,212.83 and 239,994.84 is: 331,157.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,124.30 : 545,212.83 = 239,994.84 : x
  2. Step 2: Convert to fraction form
    395,124.30/545,212.83 = 239,994.84/x
  3. Step 3: Cross multiply
    395,124.30x = 545,212.83 × 239,994.84
  4. Step 4: Simplify right side
    395,124.30x = 130,848,265,901.80
  5. Step 5: Solve for x
    x = 130,848,265,901.80/395,124.30
  6. Step 6: Final answer
    x = 331,157.22

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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.