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Finding the Fourth Proportional to 207,277.60, 310,916.40 and 74,149.78

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Solution

The fourth proportional to 207,277.60, 310,916.40 and 74,149.78 is: 111,224.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,277.60 : 310,916.40 = 74,149.78 : x
  2. Step 2: Convert to fraction form
    207,277.60/310,916.40 = 74,149.78/x
  3. Step 3: Cross multiply
    207,277.60x = 310,916.40 × 74,149.78
  4. Step 4: Simplify right side
    207,277.60x = 23,054,382,658.39
  5. Step 5: Solve for x
    x = 23,054,382,658.39/207,277.60
  6. Step 6: Final answer
    x = 111,224.67

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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.