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Finding the Fourth Proportional to 313,315.66, 469,991.77 and 88,657.30

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Solution

The fourth proportional to 313,315.66, 469,991.77 and 88,657.30 is: 132,991.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,315.66 : 469,991.77 = 88,657.30 : x
  2. Step 2: Convert to fraction form
    313,315.66/469,991.77 = 88,657.30/x
  3. Step 3: Cross multiply
    313,315.66x = 469,991.77 × 88,657.30
  4. Step 4: Simplify right side
    313,315.66x = 41,668,201,716.27
  5. Step 5: Solve for x
    x = 41,668,201,716.27/313,315.66
  6. Step 6: Final answer
    x = 132,991.12

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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.