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Finding the Fourth Proportional to 479,128.32, 661,052.16 and 277,885.44

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Solution

The fourth proportional to 479,128.32, 661,052.16 and 277,885.44 is: 383,397.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,128.32 : 661,052.16 = 277,885.44 : x
  2. Step 2: Convert to fraction form
    479,128.32/661,052.16 = 277,885.44/x
  3. Step 3: Cross multiply
    479,128.32x = 661,052.16 × 277,885.44
  4. Step 4: Simplify right side
    479,128.32x = 183,696,770,344.55
  5. Step 5: Solve for x
    x = 183,696,770,344.55/479,128.32
  6. Step 6: Final answer
    x = 383,397.86

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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.