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Finding the Fourth Proportional to 441,403.20, 662,104.80 and 145,915.20

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Solution

The fourth proportional to 441,403.20, 662,104.80 and 145,915.20 is: 218,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,403.20 : 662,104.80 = 145,915.20 : x
  2. Step 2: Convert to fraction form
    441,403.20/662,104.80 = 145,915.20/x
  3. Step 3: Cross multiply
    441,403.20x = 662,104.80 × 145,915.20
  4. Step 4: Simplify right side
    441,403.20x = 96,611,154,312.96
  5. Step 5: Solve for x
    x = 96,611,154,312.96/441,403.20
  6. Step 6: Final answer
    x = 218,872.80

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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.