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Finding the Fourth Proportional to 312,973.04, 469,553.11 and 221,963.76

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Solution

The fourth proportional to 312,973.04, 469,553.11 and 221,963.76 is: 333,012.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,973.04 : 469,553.11 = 221,963.76 : x
  2. Step 2: Convert to fraction form
    312,973.04/469,553.11 = 221,963.76/x
  3. Step 3: Cross multiply
    312,973.04x = 469,553.11 × 221,963.76
  4. Step 4: Simplify right side
    312,973.04x = 104,223,775,021.21
  5. Step 5: Solve for x
    x = 104,223,775,021.21/312,973.04
  6. Step 6: Final answer
    x = 333,012.00

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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.