Home / 429,211.73-643,811.03-145,101.84

Finding the Fourth Proportional to 429,211.73, 643,811.03 and 145,101.84

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Solution

The fourth proportional to 429,211.73, 643,811.03 and 145,101.84 is: 217,650.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,211.73 : 643,811.03 = 145,101.84 : x
  2. Step 2: Convert to fraction form
    429,211.73/643,811.03 = 145,101.84/x
  3. Step 3: Cross multiply
    429,211.73x = 643,811.03 × 145,101.84
  4. Step 4: Simplify right side
    429,211.73x = 93,418,164,339.79
  5. Step 5: Solve for x
    x = 93,418,164,339.79/429,211.73
  6. Step 6: Final answer
    x = 217,650.54

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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.