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Finding the Fourth Proportional to 272,321.76, 407,782.80 and 166,820.88

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Solution

The fourth proportional to 272,321.76, 407,782.80 and 166,820.88 is: 249,802.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,321.76 : 407,782.80 = 166,820.88 : x
  2. Step 2: Convert to fraction form
    272,321.76/407,782.80 = 166,820.88/x
  3. Step 3: Cross multiply
    272,321.76x = 407,782.80 × 166,820.88
  4. Step 4: Simplify right side
    272,321.76x = 68,026,685,544.86
  5. Step 5: Solve for x
    x = 68,026,685,544.86/272,321.76
  6. Step 6: Final answer
    x = 249,802.61

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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.