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Finding the Fourth Proportional to 352,153.61, 485,586.85 and 261,677.42

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Solution

The fourth proportional to 352,153.61, 485,586.85 and 261,677.42 is: 360,828.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,153.61 : 485,586.85 = 261,677.42 : x
  2. Step 2: Convert to fraction form
    352,153.61/485,586.85 = 261,677.42/x
  3. Step 3: Cross multiply
    352,153.61x = 485,586.85 × 261,677.42
  4. Step 4: Simplify right side
    352,153.61x = 127,067,114,653.70
  5. Step 5: Solve for x
    x = 127,067,114,653.70/352,153.61
  6. Step 6: Final answer
    x = 360,828.66

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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.