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Finding the Fourth Proportional to 430,050.60, 645,148.80 and 130,528.80

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Solution

The fourth proportional to 430,050.60, 645,148.80 and 130,528.80 is: 195,815.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,050.60 : 645,148.80 = 130,528.80 : x
  2. Step 2: Convert to fraction form
    430,050.60/645,148.80 = 130,528.80/x
  3. Step 3: Cross multiply
    430,050.60x = 645,148.80 × 130,528.80
  4. Step 4: Simplify right side
    430,050.60x = 84,210,498,685.44
  5. Step 5: Solve for x
    x = 84,210,498,685.44/430,050.60
  6. Step 6: Final answer
    x = 195,815.33

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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.