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Finding the Fourth Proportional to 242,489.63, 363,735.09 and 84,718.05

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Solution

The fourth proportional to 242,489.63, 363,735.09 and 84,718.05 is: 127,077.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,489.63 : 363,735.09 = 84,718.05 : x
  2. Step 2: Convert to fraction form
    242,489.63/363,735.09 = 84,718.05/x
  3. Step 3: Cross multiply
    242,489.63x = 363,735.09 × 84,718.05
  4. Step 4: Simplify right side
    242,489.63x = 30,814,927,541.37
  5. Step 5: Solve for x
    x = 30,814,927,541.37/242,489.63
  6. Step 6: Final answer
    x = 127,077.30

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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.