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Finding the Fourth Proportional to 312,885.56, 469,173.06 and 99,625.70

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Solution

The fourth proportional to 312,885.56, 469,173.06 and 99,625.70 is: 149,389.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,885.56 : 469,173.06 = 99,625.70 : x
  2. Step 2: Convert to fraction form
    312,885.56/469,173.06 = 99,625.70/x
  3. Step 3: Cross multiply
    312,885.56x = 469,173.06 × 99,625.70
  4. Step 4: Simplify right side
    312,885.56x = 46,741,695,696.57
  5. Step 5: Solve for x
    x = 46,741,695,696.57/312,885.56
  6. Step 6: Final answer
    x = 149,389.11

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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.