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Finding the Fourth Proportional to 411,179.60, 616,812.60 and 130,631.60

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Solution

The fourth proportional to 411,179.60, 616,812.60 and 130,631.60 is: 195,961.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,179.60 : 616,812.60 = 130,631.60 : x
  2. Step 2: Convert to fraction form
    411,179.60/616,812.60 = 130,631.60/x
  3. Step 3: Cross multiply
    411,179.60x = 616,812.60 × 130,631.60
  4. Step 4: Simplify right side
    411,179.60x = 80,575,216,838.16
  5. Step 5: Solve for x
    x = 80,575,216,838.16/411,179.60
  6. Step 6: Final answer
    x = 195,961.12

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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.