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Finding the Fourth Proportional to 615,086.60, 922,629.90 and 171,854.60

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Solution

The fourth proportional to 615,086.60, 922,629.90 and 171,854.60 is: 257,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,086.60 : 922,629.90 = 171,854.60 : x
  2. Step 2: Convert to fraction form
    615,086.60/922,629.90 = 171,854.60/x
  3. Step 3: Cross multiply
    615,086.60x = 922,629.90 × 171,854.60
  4. Step 4: Simplify right side
    615,086.60x = 158,558,192,412.54
  5. Step 5: Solve for x
    x = 158,558,192,412.54/615,086.60
  6. Step 6: Final answer
    x = 257,781.90

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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.