Home / 430,657.37-645,739.91-131,049.35

Finding the Fourth Proportional to 430,657.37, 645,739.91 and 131,049.35

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Solution

The fourth proportional to 430,657.37, 645,739.91 and 131,049.35 is: 196,499.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,657.37 : 645,739.91 = 131,049.35 : x
  2. Step 2: Convert to fraction form
    430,657.37/645,739.91 = 131,049.35/x
  3. Step 3: Cross multiply
    430,657.37x = 645,739.91 × 131,049.35
  4. Step 4: Simplify right side
    430,657.37x = 84,623,794,819.31
  5. Step 5: Solve for x
    x = 84,623,794,819.31/430,657.37
  6. Step 6: Final answer
    x = 196,499.12

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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.