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Finding the Fourth Proportional to 272,596.26, 408,960.27 and 85,607.76

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Solution

The fourth proportional to 272,596.26, 408,960.27 and 85,607.76 is: 128,432.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,596.26 : 408,960.27 = 85,607.76 : x
  2. Step 2: Convert to fraction form
    272,596.26/408,960.27 = 85,607.76/x
  3. Step 3: Cross multiply
    272,596.26x = 408,960.27 × 85,607.76
  4. Step 4: Simplify right side
    272,596.26x = 35,010,172,643.70
  5. Step 5: Solve for x
    x = 35,010,172,643.70/272,596.26
  6. Step 6: Final answer
    x = 128,432.33

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1.5x scale

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.