Home / 430,659.87-645,743.64-131,051.85

Finding the Fourth Proportional to 430,659.87, 645,743.64 and 131,051.85

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Solution

The fourth proportional to 430,659.87, 645,743.64 and 131,051.85 is: 196,502.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,659.87 : 645,743.64 = 131,051.85 : x
  2. Step 2: Convert to fraction form
    430,659.87/645,743.64 = 131,051.85/x
  3. Step 3: Cross multiply
    430,659.87x = 645,743.64 × 131,051.85
  4. Step 4: Simplify right side
    430,659.87x = 84,625,898,647.73
  5. Step 5: Solve for x
    x = 84,625,898,647.73/430,659.87
  6. Step 6: Final answer
    x = 196,502.87

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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.