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Finding the Fourth Proportional to 388,883.62, 583,327.86 and 108,403.30

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Solution

The fourth proportional to 388,883.62, 583,327.86 and 108,403.30 is: 162,605.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,883.62 : 583,327.86 = 108,403.30 : x
  2. Step 2: Convert to fraction form
    388,883.62/583,327.86 = 108,403.30/x
  3. Step 3: Cross multiply
    388,883.62x = 583,327.86 × 108,403.30
  4. Step 4: Simplify right side
    388,883.62x = 63,234,665,005.94
  5. Step 5: Solve for x
    x = 63,234,665,005.94/388,883.62
  6. Step 6: Final answer
    x = 162,605.63

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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.