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Finding the Fourth Proportional to 422,979.91, 634,507.16 and 119,376.77

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Solution

The fourth proportional to 422,979.91, 634,507.16 and 119,376.77 is: 179,075.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,979.91 : 634,507.16 = 119,376.77 : x
  2. Step 2: Convert to fraction form
    422,979.91/634,507.16 = 119,376.77/x
  3. Step 3: Cross multiply
    422,979.91x = 634,507.16 × 119,376.77
  4. Step 4: Simplify right side
    422,979.91x = 75,745,411,533.25
  5. Step 5: Solve for x
    x = 75,745,411,533.25/422,979.91
  6. Step 6: Final answer
    x = 179,075.67

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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.