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Finding the Fourth Proportional to 191,339.22, 286,997.16 and 71,373

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Solution

The fourth proportional to 191,339.22, 286,997.16 and 71,373 is: 107,055.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,339.22 : 286,997.16 = 71,373 : x
  2. Step 2: Convert to fraction form
    191,339.22/286,997.16 = 71,373/x
  3. Step 3: Cross multiply
    191,339.22x = 286,997.16 × 71,373
  4. Step 4: Simplify right side
    191,339.22x = 20,483,848,300.68
  5. Step 5: Solve for x
    x = 20,483,848,300.68/191,339.22
  6. Step 6: Final answer
    x = 107,055.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.