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Finding the Fourth Proportional to 251,634, 347,257.36 and 138,459.18

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Solution

The fourth proportional to 251,634, 347,257.36 and 138,459.18 is: 191,075.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,634 : 347,257.36 = 138,459.18 : x
  2. Step 2: Convert to fraction form
    251,634/347,257.36 = 138,459.18/x
  3. Step 3: Cross multiply
    251,634x = 347,257.36 × 138,459.18
  4. Step 4: Simplify right side
    251,634x = 48,080,969,314.56
  5. Step 5: Solve for x
    x = 48,080,969,314.56/251,634
  6. Step 6: Final answer
    x = 191,075.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.