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Finding the Fourth Proportional to 450,690.90, 621,911.25 and 269,366.82

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Solution

The fourth proportional to 450,690.90, 621,911.25 and 269,366.82 is: 371,700.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,690.90 : 621,911.25 = 269,366.82 : x
  2. Step 2: Convert to fraction form
    450,690.90/621,911.25 = 269,366.82/x
  3. Step 3: Cross multiply
    450,690.90x = 621,911.25 × 269,366.82
  4. Step 4: Simplify right side
    450,690.90x = 167,522,255,734.73
  5. Step 5: Solve for x
    x = 167,522,255,734.73/450,690.90
  6. Step 6: Final answer
    x = 371,700.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.