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Finding the Fourth Proportional to 312,593.07, 468,835.21 and 87,900.15

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Solution

The fourth proportional to 312,593.07, 468,835.21 and 87,900.15 is: 131,834.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,593.07 : 468,835.21 = 87,900.15 : x
  2. Step 2: Convert to fraction form
    312,593.07/468,835.21 = 87,900.15/x
  3. Step 3: Cross multiply
    312,593.07x = 468,835.21 × 87,900.15
  4. Step 4: Simplify right side
    312,593.07x = 41,210,686,657.85
  5. Step 5: Solve for x
    x = 41,210,686,657.85/312,593.07
  6. Step 6: Final answer
    x = 131,834.93

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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.