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Finding the Fourth Proportional to 312,899.88, 468,866.64 and 211,299.68

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Solution

The fourth proportional to 312,899.88, 468,866.64 and 211,299.68 is: 316,623.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,899.88 : 468,866.64 = 211,299.68 : x
  2. Step 2: Convert to fraction form
    312,899.88/468,866.64 = 211,299.68/x
  3. Step 3: Cross multiply
    312,899.88x = 468,866.64 × 211,299.68
  4. Step 4: Simplify right side
    312,899.88x = 99,071,370,994.68
  5. Step 5: Solve for x
    x = 99,071,370,994.68/312,899.88
  6. Step 6: Final answer
    x = 316,623.23

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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.