Home / 429,154.93-643,732.40-228,868.53

Finding the Fourth Proportional to 429,154.93, 643,732.40 and 228,868.53

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Solution

The fourth proportional to 429,154.93, 643,732.40 and 228,868.53 is: 343,302.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,154.93 : 643,732.40 = 228,868.53 : x
  2. Step 2: Convert to fraction form
    429,154.93/643,732.40 = 228,868.53/x
  3. Step 3: Cross multiply
    429,154.93x = 643,732.40 × 228,868.53
  4. Step 4: Simplify right side
    429,154.93x = 147,330,083,738.37
  5. Step 5: Solve for x
    x = 147,330,083,738.37/429,154.93
  6. Step 6: Final answer
    x = 343,302.79

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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.