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Finding the Fourth Proportional to 251,648, 347,276.70 and 138,473.18

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Solution

The fourth proportional to 251,648, 347,276.70 and 138,473.18 is: 191,094.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,648 : 347,276.70 = 138,473.18 : x
  2. Step 2: Convert to fraction form
    251,648/347,276.70 = 138,473.18/x
  3. Step 3: Cross multiply
    251,648x = 347,276.70 × 138,473.18
  4. Step 4: Simplify right side
    251,648x = 48,088,508,988.91
  5. Step 5: Solve for x
    x = 48,088,508,988.91/251,648
  6. Step 6: Final answer
    x = 191,094.34

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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.