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Finding the Fourth Proportional to 389,651.32, 584,411.10 and 109,104.04

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Solution

The fourth proportional to 389,651.32, 584,411.10 and 109,104.04 is: 163,637.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,651.32 : 584,411.10 = 109,104.04 : x
  2. Step 2: Convert to fraction form
    389,651.32/584,411.10 = 109,104.04/x
  3. Step 3: Cross multiply
    389,651.32x = 584,411.10 × 109,104.04
  4. Step 4: Simplify right side
    389,651.32x = 63,761,612,030.84
  5. Step 5: Solve for x
    x = 63,761,612,030.84/389,651.32
  6. Step 6: Final answer
    x = 163,637.61

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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.