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Finding the Fourth Proportional to 485,939.08, 728,903.35 and 166,087.90

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Solution

The fourth proportional to 485,939.08, 728,903.35 and 166,087.90 is: 249,130.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,939.08 : 728,903.35 = 166,087.90 : x
  2. Step 2: Convert to fraction form
    485,939.08/728,903.35 = 166,087.90/x
  3. Step 3: Cross multiply
    485,939.08x = 728,903.35 × 166,087.90
  4. Step 4: Simplify right side
    485,939.08x = 121,062,026,704.47
  5. Step 5: Solve for x
    x = 121,062,026,704.47/485,939.08
  6. Step 6: Final answer
    x = 249,130.05

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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.