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Finding the Fourth Proportional to 389,650.32, 584,409.60 and 109,103.04

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Solution

The fourth proportional to 389,650.32, 584,409.60 and 109,103.04 is: 163,636.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,650.32 : 584,409.60 = 109,103.04 : x
  2. Step 2: Convert to fraction form
    389,650.32/584,409.60 = 109,103.04/x
  3. Step 3: Cross multiply
    389,650.32x = 584,409.60 × 109,103.04
  4. Step 4: Simplify right side
    389,650.32x = 63,760,863,965.18
  5. Step 5: Solve for x
    x = 63,760,863,965.18/389,650.32
  6. Step 6: Final answer
    x = 163,636.11

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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.