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Finding the Fourth Proportional to 347,798.61, 478,887.39 and 271,625.40

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Solution

The fourth proportional to 347,798.61, 478,887.39 and 271,625.40 is: 374,003.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,798.61 : 478,887.39 = 271,625.40 : x
  2. Step 2: Convert to fraction form
    347,798.61/478,887.39 = 271,625.40/x
  3. Step 3: Cross multiply
    347,798.61x = 478,887.39 × 271,625.40
  4. Step 4: Simplify right side
    347,798.61x = 130,077,978,863.71
  5. Step 5: Solve for x
    x = 130,077,978,863.71/347,798.61
  6. Step 6: Final answer
    x = 374,003.73

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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.