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Finding the Fourth Proportional to 312,792.87, 469,222.11 and 102,447.21

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Solution

The fourth proportional to 312,792.87, 469,222.11 and 102,447.21 is: 153,681.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,792.87 : 469,222.11 = 102,447.21 : x
  2. Step 2: Convert to fraction form
    312,792.87/469,222.11 = 102,447.21/x
  3. Step 3: Cross multiply
    312,792.87x = 469,222.11 × 102,447.21
  4. Step 4: Simplify right side
    312,792.87x = 48,070,496,039.81
  5. Step 5: Solve for x
    x = 48,070,496,039.81/312,792.87
  6. Step 6: Final answer
    x = 153,681.56

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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.