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Finding the Fourth Proportional to 253,460.40, 380,190.60 and 251,710.80

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Solution

The fourth proportional to 253,460.40, 380,190.60 and 251,710.80 is: 377,566.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,460.40 : 380,190.60 = 251,710.80 : x
  2. Step 2: Convert to fraction form
    253,460.40/380,190.60 = 251,710.80/x
  3. Step 3: Cross multiply
    253,460.40x = 380,190.60 × 251,710.80
  4. Step 4: Simplify right side
    253,460.40x = 95,698,080,078.48
  5. Step 5: Solve for x
    x = 95,698,080,078.48/253,460.40
  6. Step 6: Final answer
    x = 377,566.20

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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.