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Finding the Fourth Proportional to 202,304.40, 303,456.60 and 139,318.80

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Solution

The fourth proportional to 202,304.40, 303,456.60 and 139,318.80 is: 208,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,304.40 : 303,456.60 = 139,318.80 : x
  2. Step 2: Convert to fraction form
    202,304.40/303,456.60 = 139,318.80/x
  3. Step 3: Cross multiply
    202,304.40x = 303,456.60 × 139,318.80
  4. Step 4: Simplify right side
    202,304.40x = 42,277,209,364.08
  5. Step 5: Solve for x
    x = 42,277,209,364.08/202,304.40
  6. Step 6: Final answer
    x = 208,978.20

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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.