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Finding the Fourth Proportional to 425,322.40, 637,983.61 and 125,779.65

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Solution

The fourth proportional to 425,322.40, 637,983.61 and 125,779.65 is: 188,669.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,322.40 : 637,983.61 = 125,779.65 : x
  2. Step 2: Convert to fraction form
    425,322.40/637,983.61 = 125,779.65/x
  3. Step 3: Cross multiply
    425,322.40x = 637,983.61 × 125,779.65
  4. Step 4: Simplify right side
    425,322.40x = 80,245,355,171.54
  5. Step 5: Solve for x
    x = 80,245,355,171.54/425,322.40
  6. Step 6: Final answer
    x = 188,669.48

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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.