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Finding the Fourth Proportional to 354,065.39, 531,150.87 and 126,343.27

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Solution

The fourth proportional to 354,065.39, 531,150.87 and 126,343.27 is: 189,533.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,065.39 : 531,150.87 = 126,343.27 : x
  2. Step 2: Convert to fraction form
    354,065.39/531,150.87 = 126,343.27/x
  3. Step 3: Cross multiply
    354,065.39x = 531,150.87 × 126,343.27
  4. Step 4: Simplify right side
    354,065.39x = 67,107,337,779.14
  5. Step 5: Solve for x
    x = 67,107,337,779.14/354,065.39
  6. Step 6: Final answer
    x = 189,533.74

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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.