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Finding the Fourth Proportional to 389,382.84, 584,109.90 and 108,899.32

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Solution

The fourth proportional to 389,382.84, 584,109.90 and 108,899.32 is: 163,358.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,382.84 : 584,109.90 = 108,899.32 : x
  2. Step 2: Convert to fraction form
    389,382.84/584,109.90 = 108,899.32/x
  3. Step 3: Cross multiply
    389,382.84x = 584,109.90 × 108,899.32
  4. Step 4: Simplify right side
    389,382.84x = 63,609,170,915.27
  5. Step 5: Solve for x
    x = 63,609,170,915.27/389,382.84
  6. Step 6: Final answer
    x = 163,358.95

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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.