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Finding the Fourth Proportional to 429,774.28, 643,775.47 and 251,741.54

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Solution

The fourth proportional to 429,774.28, 643,775.47 and 251,741.54 is: 377,093.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,774.28 : 643,775.47 = 251,741.54 : x
  2. Step 2: Convert to fraction form
    429,774.28/643,775.47 = 251,741.54/x
  3. Step 3: Cross multiply
    429,774.28x = 643,775.47 × 251,741.54
  4. Step 4: Simplify right side
    429,774.28x = 162,065,029,212.11
  5. Step 5: Solve for x
    x = 162,065,029,212.11/429,774.28
  6. Step 6: Final answer
    x = 377,093.37

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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.