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Finding the Fourth Proportional to 485,820.88, 728,710.64 and 166,001.48

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Solution

The fourth proportional to 485,820.88, 728,710.64 and 166,001.48 is: 248,995.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,820.88 : 728,710.64 = 166,001.48 : x
  2. Step 2: Convert to fraction form
    485,820.88/728,710.64 = 166,001.48/x
  3. Step 3: Cross multiply
    485,820.88x = 728,710.64 × 166,001.48
  4. Step 4: Simplify right side
    485,820.88x = 120,967,044,731.75
  5. Step 5: Solve for x
    x = 120,967,044,731.75/485,820.88
  6. Step 6: Final answer
    x = 248,995.15

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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.