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Finding the Fourth Proportional to 395,314.32, 545,523.66 and 220,885.92

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Solution

The fourth proportional to 395,314.32, 545,523.66 and 220,885.92 is: 304,816.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,314.32 : 545,523.66 = 220,885.92 : x
  2. Step 2: Convert to fraction form
    395,314.32/545,523.66 = 220,885.92/x
  3. Step 3: Cross multiply
    395,314.32x = 545,523.66 × 220,885.92
  4. Step 4: Simplify right side
    395,314.32x = 120,498,495,520.87
  5. Step 5: Solve for x
    x = 120,498,495,520.87/395,314.32
  6. Step 6: Final answer
    x = 304,816.93

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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.