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Finding the Fourth Proportional to 303,946.40, 456,178.80 and 135,725.60

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Solution

The fourth proportional to 303,946.40, 456,178.80 and 135,725.60 is: 203,704.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,946.40 : 456,178.80 = 135,725.60 : x
  2. Step 2: Convert to fraction form
    303,946.40/456,178.80 = 135,725.60/x
  3. Step 3: Cross multiply
    303,946.40x = 456,178.80 × 135,725.60
  4. Step 4: Simplify right side
    303,946.40x = 61,915,141,337.28
  5. Step 5: Solve for x
    x = 61,915,141,337.28/303,946.40
  6. Step 6: Final answer
    x = 203,704.14

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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.