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Finding the Fourth Proportional to 387,236.79, 580,914.15 and 197,593.52

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Solution

The fourth proportional to 387,236.79, 580,914.15 and 197,593.52 is: 296,420.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,236.79 : 580,914.15 = 197,593.52 : x
  2. Step 2: Convert to fraction form
    387,236.79/580,914.15 = 197,593.52/x
  3. Step 3: Cross multiply
    387,236.79x = 580,914.15 × 197,593.52
  4. Step 4: Simplify right side
    387,236.79x = 114,784,868,070.76
  5. Step 5: Solve for x
    x = 114,784,868,070.76/387,236.79
  6. Step 6: Final answer
    x = 296,420.36

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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.