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Finding the Fourth Proportional to 447,000.40, 669,625.80 and 268,978.60

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Solution

The fourth proportional to 447,000.40, 669,625.80 and 268,978.60 is: 402,941.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,000.40 : 669,625.80 = 268,978.60 : x
  2. Step 2: Convert to fraction form
    447,000.40/669,625.80 = 268,978.60/x
  3. Step 3: Cross multiply
    447,000.40x = 669,625.80 × 268,978.60
  4. Step 4: Simplify right side
    447,000.40x = 180,115,010,207.88
  5. Step 5: Solve for x
    x = 180,115,010,207.88/447,000.40
  6. Step 6: Final answer
    x = 402,941.50

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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.