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Finding the Fourth Proportional to 272,128.60, 407,415.30 and 167,152.60

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Solution

The fourth proportional to 272,128.60, 407,415.30 and 167,152.60 is: 250,251.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,128.60 : 407,415.30 = 167,152.60 : x
  2. Step 2: Convert to fraction form
    272,128.60/407,415.30 = 167,152.60/x
  3. Step 3: Cross multiply
    272,128.60x = 407,415.30 × 167,152.60
  4. Step 4: Simplify right side
    272,128.60x = 68,100,526,674.78
  5. Step 5: Solve for x
    x = 68,100,526,674.78/272,128.60
  6. Step 6: Final answer
    x = 250,251.27

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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.