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Finding the Fourth Proportional to 399,265.92, 550,488.96 and 255,790.08

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Solution

The fourth proportional to 399,265.92, 550,488.96 and 255,790.08 is: 352,671.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,265.92 : 550,488.96 = 255,790.08 : x
  2. Step 2: Convert to fraction form
    399,265.92/550,488.96 = 255,790.08/x
  3. Step 3: Cross multiply
    399,265.92x = 550,488.96 × 255,790.08
  4. Step 4: Simplify right side
    399,265.92x = 140,809,615,117.52
  5. Step 5: Solve for x
    x = 140,809,615,117.52/399,265.92
  6. Step 6: Final answer
    x = 352,671.26

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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.