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Finding the Fourth Proportional to 251,924.40, 347,647.32 and 138,746.88

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Solution

The fourth proportional to 251,924.40, 347,647.32 and 138,746.88 is: 191,466.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,924.40 : 347,647.32 = 138,746.88 : x
  2. Step 2: Convert to fraction form
    251,924.40/347,647.32 = 138,746.88/x
  3. Step 3: Cross multiply
    251,924.40x = 347,647.32 × 138,746.88
  4. Step 4: Simplify right side
    251,924.40x = 48,234,980,990.36
  5. Step 5: Solve for x
    x = 48,234,980,990.36/251,924.40
  6. Step 6: Final answer
    x = 191,466.09

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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.