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Finding the Fourth Proportional to 268,906.10, 403,359.15 and 256,658.90

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Solution

The fourth proportional to 268,906.10, 403,359.15 and 256,658.90 is: 384,988.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,906.10 : 403,359.15 = 256,658.90 : x
  2. Step 2: Convert to fraction form
    268,906.10/403,359.15 = 256,658.90/x
  3. Step 3: Cross multiply
    268,906.10x = 403,359.15 × 256,658.90
  4. Step 4: Simplify right side
    268,906.10x = 103,525,715,743.94
  5. Step 5: Solve for x
    x = 103,525,715,743.94/268,906.10
  6. Step 6: Final answer
    x = 384,988.35

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1.5x scale

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.