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Finding the Fourth Proportional to 455,080.80, 683,139.60 and 268,197.60

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Solution

The fourth proportional to 455,080.80, 683,139.60 and 268,197.60 is: 402,601.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,080.80 : 683,139.60 = 268,197.60 : x
  2. Step 2: Convert to fraction form
    455,080.80/683,139.60 = 268,197.60/x
  3. Step 3: Cross multiply
    455,080.80x = 683,139.60 × 268,197.60
  4. Step 4: Simplify right side
    455,080.80x = 183,216,401,184.96
  5. Step 5: Solve for x
    x = 183,216,401,184.96/455,080.80
  6. Step 6: Final answer
    x = 402,601.91

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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.