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Finding the Fourth Proportional to 408,116.80, 612,175.20 and 158,636.80

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Solution

The fourth proportional to 408,116.80, 612,175.20 and 158,636.80 is: 237,955.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,116.80 : 612,175.20 = 158,636.80 : x
  2. Step 2: Convert to fraction form
    408,116.80/612,175.20 = 158,636.80/x
  3. Step 3: Cross multiply
    408,116.80x = 612,175.20 × 158,636.80
  4. Step 4: Simplify right side
    408,116.80x = 97,113,514,767.36
  5. Step 5: Solve for x
    x = 97,113,514,767.36/408,116.80
  6. Step 6: Final answer
    x = 237,955.20

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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.