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Finding the Fourth Proportional to 485,352, 728,171.64 and 248,860.62

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Solution

The fourth proportional to 485,352, 728,171.64 and 248,860.62 is: 373,364.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,352 : 728,171.64 = 248,860.62 : x
  2. Step 2: Convert to fraction form
    485,352/728,171.64 = 248,860.62/x
  3. Step 3: Cross multiply
    485,352x = 728,171.64 × 248,860.62
  4. Step 4: Simplify right side
    485,352x = 181,213,245,796.82
  5. Step 5: Solve for x
    x = 181,213,245,796.82/485,352
  6. Step 6: Final answer
    x = 373,364.58

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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.