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Finding the Fourth Proportional to 485,597.94, 728,463.38 and 165,663.91

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Solution

The fourth proportional to 485,597.94, 728,463.38 and 165,663.91 is: 248,518.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,597.94 : 728,463.38 = 165,663.91 : x
  2. Step 2: Convert to fraction form
    485,597.94/728,463.38 = 165,663.91/x
  3. Step 3: Cross multiply
    485,597.94x = 728,463.38 × 165,663.91
  4. Step 4: Simplify right side
    485,597.94x = 120,680,091,822.62
  5. Step 5: Solve for x
    x = 120,680,091,822.62/485,597.94
  6. Step 6: Final answer
    x = 248,518.54

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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.