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Finding the Fourth Proportional to 449,063.92, 619,708.04 and 306,073.66

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Solution

The fourth proportional to 449,063.92, 619,708.04 and 306,073.66 is: 422,381.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,063.92 : 619,708.04 = 306,073.66 : x
  2. Step 2: Convert to fraction form
    449,063.92/619,708.04 = 306,073.66/x
  3. Step 3: Cross multiply
    449,063.92x = 619,708.04 × 306,073.66
  4. Step 4: Simplify right side
    449,063.92x = 189,676,307,934.23
  5. Step 5: Solve for x
    x = 189,676,307,934.23/449,063.92
  6. Step 6: Final answer
    x = 422,381.54

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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.