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Finding the Fourth Proportional to 354,519.27, 531,459 and 129,723.01

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Solution

The fourth proportional to 354,519.27, 531,459 and 129,723.01 is: 194,467.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,519.27 : 531,459 = 129,723.01 : x
  2. Step 2: Convert to fraction form
    354,519.27/531,459 = 129,723.01/x
  3. Step 3: Cross multiply
    354,519.27x = 531,459 × 129,723.01
  4. Step 4: Simplify right side
    354,519.27x = 68,942,461,171.59
  5. Step 5: Solve for x
    x = 68,942,461,171.59/354,519.27
  6. Step 6: Final answer
    x = 194,467.46

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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.