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Finding the Fourth Proportional to 401,609.76, 554,596.52 and 258,621.27

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Solution

The fourth proportional to 401,609.76, 554,596.52 and 258,621.27 is: 357,138.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,609.76 : 554,596.52 = 258,621.27 : x
  2. Step 2: Convert to fraction form
    401,609.76/554,596.52 = 258,621.27/x
  3. Step 3: Cross multiply
    401,609.76x = 554,596.52 × 258,621.27
  4. Step 4: Simplify right side
    401,609.76x = 143,430,456,339.98
  5. Step 5: Solve for x
    x = 143,430,456,339.98/401,609.76
  6. Step 6: Final answer
    x = 357,138.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.