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Finding the Fourth Proportional to 368,785.80, 553,308.30 and 132,136.20

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Solution

The fourth proportional to 368,785.80, 553,308.30 and 132,136.20 is: 198,250.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,785.80 : 553,308.30 = 132,136.20 : x
  2. Step 2: Convert to fraction form
    368,785.80/553,308.30 = 132,136.20/x
  3. Step 3: Cross multiply
    368,785.80x = 553,308.30 × 132,136.20
  4. Step 4: Simplify right side
    368,785.80x = 73,112,056,190.46
  5. Step 5: Solve for x
    x = 73,112,056,190.46/368,785.80
  6. Step 6: Final answer
    x = 198,250.74

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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.