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Finding the Fourth Proportional to 331,644.15, 457,685.15 and 186,495.60

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Solution

The fourth proportional to 331,644.15, 457,685.15 and 186,495.60 is: 257,373.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,644.15 : 457,685.15 = 186,495.60 : x
  2. Step 2: Convert to fraction form
    331,644.15/457,685.15 = 186,495.60/x
  3. Step 3: Cross multiply
    331,644.15x = 457,685.15 × 186,495.60
  4. Step 4: Simplify right side
    331,644.15x = 85,356,265,727.86
  5. Step 5: Solve for x
    x = 85,356,265,727.86/331,644.15
  6. Step 6: Final answer
    x = 257,373.05

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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.