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Finding the Fourth Proportional to 207,269.60, 310,904.40 and 74,141.78

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Solution

The fourth proportional to 207,269.60, 310,904.40 and 74,141.78 is: 111,212.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,269.60 : 310,904.40 = 74,141.78 : x
  2. Step 2: Convert to fraction form
    207,269.60/310,904.40 = 74,141.78/x
  3. Step 3: Cross multiply
    207,269.60x = 310,904.40 × 74,141.78
  4. Step 4: Simplify right side
    207,269.60x = 23,051,005,625.83
  5. Step 5: Solve for x
    x = 23,051,005,625.83/207,269.60
  6. Step 6: Final answer
    x = 111,212.67

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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.