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Finding the Fourth Proportional to 358,811.46, 538,030.37 and 133,987.03

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Solution

The fourth proportional to 358,811.46, 538,030.37 and 133,987.03 is: 200,910.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,811.46 : 538,030.37 = 133,987.03 : x
  2. Step 2: Convert to fraction form
    358,811.46/538,030.37 = 133,987.03/x
  3. Step 3: Cross multiply
    358,811.46x = 538,030.37 × 133,987.03
  4. Step 4: Simplify right side
    358,811.46x = 72,089,090,315.99
  5. Step 5: Solve for x
    x = 72,089,090,315.99/358,811.46
  6. Step 6: Final answer
    x = 200,910.78

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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.