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Finding the Fourth Proportional to 236,149.86, 354,275.37 and 86,389.57

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Solution

The fourth proportional to 236,149.86, 354,275.37 and 86,389.57 is: 129,602.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,149.86 : 354,275.37 = 86,389.57 : x
  2. Step 2: Convert to fraction form
    236,149.86/354,275.37 = 86,389.57/x
  3. Step 3: Cross multiply
    236,149.86x = 354,275.37 × 86,389.57
  4. Step 4: Simplify right side
    236,149.86x = 30,605,697,318.74
  5. Step 5: Solve for x
    x = 30,605,697,318.74/236,149.86
  6. Step 6: Final answer
    x = 129,602.86

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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.