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Finding the Fourth Proportional to 429,636.00, 643,472.85 and 205,154.46

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Solution

The fourth proportional to 429,636.00, 643,472.85 and 205,154.46 is: 307,263.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,636.00 : 643,472.85 = 205,154.46 : x
  2. Step 2: Convert to fraction form
    429,636.00/643,472.85 = 205,154.46/x
  3. Step 3: Cross multiply
    429,636.00x = 643,472.85 × 205,154.46
  4. Step 4: Simplify right side
    429,636.00x = 132,011,326,675.09
  5. Step 5: Solve for x
    x = 132,011,326,675.09/429,636.00
  6. Step 6: Final answer
    x = 307,263.19

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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.