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Finding the Fourth Proportional to 312,866.04, 469,289.88 and 76,205.28

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Solution

The fourth proportional to 312,866.04, 469,289.88 and 76,205.28 is: 114,305.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,866.04 : 469,289.88 = 76,205.28 : x
  2. Step 2: Convert to fraction form
    312,866.04/469,289.88 = 76,205.28/x
  3. Step 3: Cross multiply
    312,866.04x = 469,289.88 × 76,205.28
  4. Step 4: Simplify right side
    312,866.04x = 35,762,366,706.57
  5. Step 5: Solve for x
    x = 35,762,366,706.57/312,866.04
  6. Step 6: Final answer
    x = 114,305.68

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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.