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Finding the Fourth Proportional to 630,270.12, 945,261.18 and 180,987.42

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Solution

The fourth proportional to 630,270.12, 945,261.18 and 180,987.42 is: 271,439.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,270.12 : 945,261.18 = 180,987.42 : x
  2. Step 2: Convert to fraction form
    630,270.12/945,261.18 = 180,987.42/x
  3. Step 3: Cross multiply
    630,270.12x = 945,261.18 × 180,987.42
  4. Step 4: Simplify right side
    630,270.12x = 171,080,382,194.36
  5. Step 5: Solve for x
    x = 171,080,382,194.36/630,270.12
  6. Step 6: Final answer
    x = 271,439.78

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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.