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Finding the Fourth Proportional to 236,357.95, 354,323.68 and 86,493.78

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Solution

The fourth proportional to 236,357.95, 354,323.68 and 86,493.78 is: 129,662.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,357.95 : 354,323.68 = 86,493.78 : x
  2. Step 2: Convert to fraction form
    236,357.95/354,323.68 = 86,493.78/x
  3. Step 3: Cross multiply
    236,357.95x = 354,323.68 × 86,493.78
  4. Step 4: Simplify right side
    236,357.95x = 30,646,794,426.71
  5. Step 5: Solve for x
    x = 30,646,794,426.71/236,357.95
  6. Step 6: Final answer
    x = 129,662.63

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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.