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Finding the Fourth Proportional to 324,007.70, 485,428.35 and 264,521.30

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Solution

The fourth proportional to 324,007.70, 485,428.35 and 264,521.30 is: 396,305.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,007.70 : 485,428.35 = 264,521.30 : x
  2. Step 2: Convert to fraction form
    324,007.70/485,428.35 = 264,521.30/x
  3. Step 3: Cross multiply
    324,007.70x = 485,428.35 × 264,521.30
  4. Step 4: Simplify right side
    324,007.70x = 128,406,138,198.86
  5. Step 5: Solve for x
    x = 128,406,138,198.86/324,007.70
  6. Step 6: Final answer
    x = 396,305.82

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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.