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Finding the Fourth Proportional to 205,322.40, 307,954.80 and 65,095.20

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Solution

The fourth proportional to 205,322.40, 307,954.80 and 65,095.20 is: 97,633.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,322.40 : 307,954.80 = 65,095.20 : x
  2. Step 2: Convert to fraction form
    205,322.40/307,954.80 = 65,095.20/x
  3. Step 3: Cross multiply
    205,322.40x = 307,954.80 × 65,095.20
  4. Step 4: Simplify right side
    205,322.40x = 20,046,379,296.96
  5. Step 5: Solve for x
    x = 20,046,379,296.96/205,322.40
  6. Step 6: Final answer
    x = 97,633.67

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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.