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Finding the Fourth Proportional to 395,184.64, 545,406.72 and 225,379.84

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Solution

The fourth proportional to 395,184.64, 545,406.72 and 225,379.84 is: 311,053.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,184.64 : 545,406.72 = 225,379.84 : x
  2. Step 2: Convert to fraction form
    395,184.64/545,406.72 = 225,379.84/x
  3. Step 3: Cross multiply
    395,184.64x = 545,406.72 × 225,379.84
  4. Step 4: Simplify right side
    395,184.64x = 122,923,679,288.53
  5. Step 5: Solve for x
    x = 122,923,679,288.53/395,184.64
  6. Step 6: Final answer
    x = 311,053.79

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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.