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Finding the Fourth Proportional to 429,777.77, 643,780.82 and 251,745.04

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Solution

The fourth proportional to 429,777.77, 643,780.82 and 251,745.04 is: 377,098.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,777.77 : 643,780.82 = 251,745.04 : x
  2. Step 2: Convert to fraction form
    429,777.77/643,780.82 = 251,745.04/x
  3. Step 3: Cross multiply
    429,777.77x = 643,780.82 × 251,745.04
  4. Step 4: Simplify right side
    429,777.77x = 162,068,628,282.13
  5. Step 5: Solve for x
    x = 162,068,628,282.13/429,777.77
  6. Step 6: Final answer
    x = 377,098.68

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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.