Home / 429,949.14-645,015.48-145,629.75

Finding the Fourth Proportional to 429,949.14, 645,015.48 and 145,629.75

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Solution

The fourth proportional to 429,949.14, 645,015.48 and 145,629.75 is: 218,475.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,949.14 : 645,015.48 = 145,629.75 : x
  2. Step 2: Convert to fraction form
    429,949.14/645,015.48 = 145,629.75/x
  3. Step 3: Cross multiply
    429,949.14x = 645,015.48 × 145,629.75
  4. Step 4: Simplify right side
    429,949.14x = 93,933,443,098.53
  5. Step 5: Solve for x
    x = 93,933,443,098.53/429,949.14
  6. Step 6: Final answer
    x = 218,475.71

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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.