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Finding the Fourth Proportional to 485,756.16, 670,311.72 and 267,951.72

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Solution

The fourth proportional to 485,756.16, 670,311.72 and 267,951.72 is: 369,755.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,756.16 : 670,311.72 = 267,951.72 : x
  2. Step 2: Convert to fraction form
    485,756.16/670,311.72 = 267,951.72/x
  3. Step 3: Cross multiply
    485,756.16x = 670,311.72 × 267,951.72
  4. Step 4: Simplify right side
    485,756.16x = 179,611,178,310.16
  5. Step 5: Solve for x
    x = 179,611,178,310.16/485,756.16
  6. Step 6: Final answer
    x = 369,755.84

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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.