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Finding the Fourth Proportional to 321,303.80, 481,869.30 and 134,276.60

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Solution

The fourth proportional to 321,303.80, 481,869.30 and 134,276.60 is: 201,378.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,303.80 : 481,869.30 = 134,276.60 : x
  2. Step 2: Convert to fraction form
    321,303.80/481,869.30 = 134,276.60/x
  3. Step 3: Cross multiply
    321,303.80x = 481,869.30 × 134,276.60
  4. Step 4: Simplify right side
    321,303.80x = 64,703,771,248.38
  5. Step 5: Solve for x
    x = 64,703,771,248.38/321,303.80
  6. Step 6: Final answer
    x = 201,378.79

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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.