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Finding the Fourth Proportional to 485,646.60, 728,054.52 and 186,341.96

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Solution

The fourth proportional to 485,646.60, 728,054.52 and 186,341.96 is: 279,353.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,646.60 : 728,054.52 = 186,341.96 : x
  2. Step 2: Convert to fraction form
    485,646.60/728,054.52 = 186,341.96/x
  3. Step 3: Cross multiply
    485,646.60x = 728,054.52 × 186,341.96
  4. Step 4: Simplify right side
    485,646.60x = 135,667,106,243.66
  5. Step 5: Solve for x
    x = 135,667,106,243.66/485,646.60
  6. Step 6: Final answer
    x = 279,353.56

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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.