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Finding the Fourth Proportional to 430,051.60, 645,150.30 and 130,529.80

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Solution

The fourth proportional to 430,051.60, 645,150.30 and 130,529.80 is: 195,816.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,051.60 : 645,150.30 = 130,529.80 : x
  2. Step 2: Convert to fraction form
    430,051.60/645,150.30 = 130,529.80/x
  3. Step 3: Cross multiply
    430,051.60x = 645,150.30 × 130,529.80
  4. Step 4: Simplify right side
    430,051.60x = 84,211,339,628.94
  5. Step 5: Solve for x
    x = 84,211,339,628.94/430,051.60
  6. Step 6: Final answer
    x = 195,816.83

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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.