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Finding the Fourth Proportional to 426,915.66, 640,373.48 and 160,735.88

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Solution

The fourth proportional to 426,915.66, 640,373.48 and 160,735.88 is: 241,103.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,915.66 : 640,373.48 = 160,735.88 : x
  2. Step 2: Convert to fraction form
    426,915.66/640,373.48 = 160,735.88/x
  3. Step 3: Cross multiply
    426,915.66x = 640,373.48 × 160,735.88
  4. Step 4: Simplify right side
    426,915.66x = 102,930,994,836.46
  5. Step 5: Solve for x
    x = 102,930,994,836.46/426,915.66
  6. Step 6: Final answer
    x = 241,103.82

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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.