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Finding the Fourth Proportional to 251,587, 347,190.06 and 138,407.32

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Solution

The fourth proportional to 251,587, 347,190.06 and 138,407.32 is: 191,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,587 : 347,190.06 = 138,407.32 : x
  2. Step 2: Convert to fraction form
    251,587/347,190.06 = 138,407.32/x
  3. Step 3: Cross multiply
    251,587x = 347,190.06 × 138,407.32
  4. Step 4: Simplify right side
    251,587x = 48,053,645,735.24
  5. Step 5: Solve for x
    x = 48,053,645,735.24/251,587
  6. Step 6: Final answer
    x = 191,002.10

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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.