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Finding the Fourth Proportional to 356,611.53, 492,174.39 and 220,689.27

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Solution

The fourth proportional to 356,611.53, 492,174.39 and 220,689.27 is: 304,582.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,611.53 : 492,174.39 = 220,689.27 : x
  2. Step 2: Convert to fraction form
    356,611.53/492,174.39 = 220,689.27/x
  3. Step 3: Cross multiply
    356,611.53x = 492,174.39 × 220,689.27
  4. Step 4: Simplify right side
    356,611.53x = 108,617,606,841.80
  5. Step 5: Solve for x
    x = 108,617,606,841.80/356,611.53
  6. Step 6: Final answer
    x = 304,582.43

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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.