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Finding the Fourth Proportional to 305,418.90, 459,003.15 and 266,927.70

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Solution

The fourth proportional to 305,418.90, 459,003.15 and 266,927.70 is: 401,156.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,418.90 : 459,003.15 = 266,927.70 : x
  2. Step 2: Convert to fraction form
    305,418.90/459,003.15 = 266,927.70/x
  3. Step 3: Cross multiply
    305,418.90x = 459,003.15 × 266,927.70
  4. Step 4: Simplify right side
    305,418.90x = 122,520,655,122.26
  5. Step 5: Solve for x
    x = 122,520,655,122.26/305,418.90
  6. Step 6: Final answer
    x = 401,156.10

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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.