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Finding the Fourth Proportional to 372,820.60, 559,189.04 and 102,987.12

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Solution

The fourth proportional to 372,820.60, 559,189.04 and 102,987.12 is: 154,469.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,820.60 : 559,189.04 = 102,987.12 : x
  2. Step 2: Convert to fraction form
    372,820.60/559,189.04 = 102,987.12/x
  3. Step 3: Cross multiply
    372,820.60x = 559,189.04 × 102,987.12
  4. Step 4: Simplify right side
    372,820.60x = 57,589,268,765.16
  5. Step 5: Solve for x
    x = 57,589,268,765.16/372,820.60
  6. Step 6: Final answer
    x = 154,469.12

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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.