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Finding the Fourth Proportional to 251,498.76, 347,062.53 and 138,323.40

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Solution

The fourth proportional to 251,498.76, 347,062.53 and 138,323.40 is: 190,883.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,498.76 : 347,062.53 = 138,323.40 : x
  2. Step 2: Convert to fraction form
    251,498.76/347,062.53 = 138,323.40/x
  3. Step 3: Cross multiply
    251,498.76x = 347,062.53 × 138,323.40
  4. Step 4: Simplify right side
    251,498.76x = 48,006,869,162.20
  5. Step 5: Solve for x
    x = 48,006,869,162.20/251,498.76
  6. Step 6: Final answer
    x = 190,883.12

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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.