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Finding the Fourth Proportional to 429,802.00, 644,665.86 and 145,486.45

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Solution

The fourth proportional to 429,802.00, 644,665.86 and 145,486.45 is: 218,217.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,802.00 : 644,665.86 = 145,486.45 : x
  2. Step 2: Convert to fraction form
    429,802.00/644,665.86 = 145,486.45/x
  3. Step 3: Cross multiply
    429,802.00x = 644,665.86 × 145,486.45
  4. Step 4: Simplify right side
    429,802.00x = 93,790,150,435.73
  5. Step 5: Solve for x
    x = 93,790,150,435.73/429,802.00
  6. Step 6: Final answer
    x = 218,217.11

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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.