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Finding the Fourth Proportional to 303,318.90, 455,853.15 and 264,827.70

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Solution

The fourth proportional to 303,318.90, 455,853.15 and 264,827.70 is: 398,005.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,318.90 : 455,853.15 = 264,827.70 : x
  2. Step 2: Convert to fraction form
    303,318.90/455,853.15 = 264,827.70/x
  3. Step 3: Cross multiply
    303,318.90x = 455,853.15 × 264,827.70
  4. Step 4: Simplify right side
    303,318.90x = 120,722,541,252.26
  5. Step 5: Solve for x
    x = 120,722,541,252.26/303,318.90
  6. Step 6: Final answer
    x = 398,005.34

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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.