Home / 429,636.18-644,636.50-229,904.76

Finding the Fourth Proportional to 429,636.18, 644,636.50 and 229,904.76

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Solution

The fourth proportional to 429,636.18, 644,636.50 and 229,904.76 is: 344,954.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,636.18 : 644,636.50 = 229,904.76 : x
  2. Step 2: Convert to fraction form
    429,636.18/644,636.50 = 229,904.76/x
  3. Step 3: Cross multiply
    429,636.18x = 644,636.50 × 229,904.76
  4. Step 4: Simplify right side
    429,636.18x = 148,204,999,819.74
  5. Step 5: Solve for x
    x = 148,204,999,819.74/429,636.18
  6. Step 6: Final answer
    x = 344,954.65

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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.