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Finding the Fourth Proportional to 411,029.60, 616,609.20 and 130,575.20

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Solution

The fourth proportional to 411,029.60, 616,609.20 and 130,575.20 is: 195,883.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,029.60 : 616,609.20 = 130,575.20 : x
  2. Step 2: Convert to fraction form
    411,029.60/616,609.20 = 130,575.20/x
  3. Step 3: Cross multiply
    411,029.60x = 616,609.20 × 130,575.20
  4. Step 4: Simplify right side
    411,029.60x = 80,513,869,611.84
  5. Step 5: Solve for x
    x = 80,513,869,611.84/411,029.60
  6. Step 6: Final answer
    x = 195,883.39

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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.