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Finding the Fourth Proportional to 443,364.30, 665,046.45 and 310,394.70

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Solution

The fourth proportional to 443,364.30, 665,046.45 and 310,394.70 is: 465,592.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,364.30 : 665,046.45 = 310,394.70 : x
  2. Step 2: Convert to fraction form
    443,364.30/665,046.45 = 310,394.70/x
  3. Step 3: Cross multiply
    443,364.30x = 665,046.45 × 310,394.70
  4. Step 4: Simplify right side
    443,364.30x = 206,426,893,333.82
  5. Step 5: Solve for x
    x = 206,426,893,333.82/443,364.30
  6. Step 6: Final answer
    x = 465,592.05

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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.