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Finding the Fourth Proportional to 486,096.40, 727,978.20 and 236,486.80

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Solution

The fourth proportional to 486,096.40, 727,978.20 and 236,486.80 is: 354,162.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,096.40 : 727,978.20 = 236,486.80 : x
  2. Step 2: Convert to fraction form
    486,096.40/727,978.20 = 236,486.80/x
  3. Step 3: Cross multiply
    486,096.40x = 727,978.20 × 236,486.80
  4. Step 4: Simplify right side
    486,096.40x = 172,157,234,987.76
  5. Step 5: Solve for x
    x = 172,157,234,987.76/486,096.40
  6. Step 6: Final answer
    x = 354,162.74

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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.