Home / 429,273.14-643,909.70-148,790.38

Finding the Fourth Proportional to 429,273.14, 643,909.70 and 148,790.38

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Solution

The fourth proportional to 429,273.14, 643,909.70 and 148,790.38 is: 223,185.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,273.14 : 643,909.70 = 148,790.38 : x
  2. Step 2: Convert to fraction form
    429,273.14/643,909.70 = 148,790.38/x
  3. Step 3: Cross multiply
    429,273.14x = 643,909.70 × 148,790.38
  4. Step 4: Simplify right side
    429,273.14x = 95,807,568,948.69
  5. Step 5: Solve for x
    x = 95,807,568,948.69/429,273.14
  6. Step 6: Final answer
    x = 223,185.57

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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.