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Finding the Fourth Proportional to 411,178.60, 616,811.10 and 130,630.60

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Solution

The fourth proportional to 411,178.60, 616,811.10 and 130,630.60 is: 195,959.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,178.60 : 616,811.10 = 130,630.60 : x
  2. Step 2: Convert to fraction form
    411,178.60/616,811.10 = 130,630.60/x
  3. Step 3: Cross multiply
    411,178.60x = 616,811.10 × 130,630.60
  4. Step 4: Simplify right side
    411,178.60x = 80,574,404,079.66
  5. Step 5: Solve for x
    x = 80,574,404,079.66/411,178.60
  6. Step 6: Final answer
    x = 195,959.62

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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.