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Finding the Fourth Proportional to 363,625.20, 545,396.04 and 138,980.64

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Solution

The fourth proportional to 363,625.20, 545,396.04 and 138,980.64 is: 208,455.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,625.20 : 545,396.04 = 138,980.64 : x
  2. Step 2: Convert to fraction form
    363,625.20/545,396.04 = 138,980.64/x
  3. Step 3: Cross multiply
    363,625.20x = 545,396.04 × 138,980.64
  4. Step 4: Simplify right side
    363,625.20x = 75,799,490,692.67
  5. Step 5: Solve for x
    x = 75,799,490,692.67/363,625.20
  6. Step 6: Final answer
    x = 208,455.00

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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.