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Finding the Fourth Proportional to 455,275.20, 682,912.80 and 189,007.95

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Solution

The fourth proportional to 455,275.20, 682,912.80 and 189,007.95 is: 283,511.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,275.20 : 682,912.80 = 189,007.95 : x
  2. Step 2: Convert to fraction form
    455,275.20/682,912.80 = 189,007.95/x
  3. Step 3: Cross multiply
    455,275.20x = 682,912.80 × 189,007.95
  4. Step 4: Simplify right side
    455,275.20x = 129,075,948,356.76
  5. Step 5: Solve for x
    x = 129,075,948,356.76/455,275.20
  6. Step 6: Final answer
    x = 283,511.93

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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.