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Finding the Fourth Proportional to 251,588.68, 347,191.86 and 138,411.16

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Solution

The fourth proportional to 251,588.68, 347,191.86 and 138,411.16 is: 191,007.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,588.68 : 347,191.86 = 138,411.16 : x
  2. Step 2: Convert to fraction form
    251,588.68/347,191.86 = 138,411.16/x
  3. Step 3: Cross multiply
    251,588.68x = 347,191.86 × 138,411.16
  4. Step 4: Simplify right side
    251,588.68x = 48,055,228,085.16
  5. Step 5: Solve for x
    x = 48,055,228,085.16/251,588.68
  6. Step 6: Final answer
    x = 191,007.12

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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.